kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

cve CVE-2026-53071 2 sources, 2 claims · Watch

Red Hat writes:
kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp the claim

Severity they disagree: HIGH NVD
moderate Red Hat
CVSS they disagree: 8.8 NVD
7.5 Red Hat
Vendor: Linux NVD
Product: Linux NVD
CWE: CWE-667, CWE-416 NVD
CWE-416 Red Hat

How far exploitation has got

No public code known
Proof of concept
Proof of concept, verified
A Metasploit module
Exploited in the wild
Used in ransomware campaigns

Why the CVSS differs

Metric	NVD	Red Hat
Attack vector AV	adjacent A	adjacent A
Attack complexity AC	low L	high H
Privileges required PR	none N	none N
User interaction UI	none N	none N
Scope S	unchanged U	unchanged U
Confidentiality C	high H	high H
Integrity I	high H	high H
Availability A	high H	high H

Each source scores the same vulnerability from what it judges the attack to need. The rows marked are where they judge it differently.

Timeline

2026-06-24	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp l2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding l2cap_chan_lock(). Every other l2cap_chan_del() caller in the file acquires the lock first. A remote BLE device can send a crafted L2CAP ECRED reconfiguration response to corrupt the channel list while another thread is iterating it. Add l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(), and l2cap_chan_unlock() and l2cap_chan_put() after, matching the pattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().	NVD
2026-06-24	first spoke of it: kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp	Red Hat

What it is to other things

affects	linux/linux_kernel NVD
made_by	linux NVD

In words only, so not counted until a person confirms one:

affects

linux/linux

NVD says “Linux · Linux”

Every value, with what each source said and its receipt

Property Source Said Means here

CVSS

cvss

conflict

NVD

8.8

receipt

Source: NVD
Its words: 8.8
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseScore || field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

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        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
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}

—

CVSS

cvss

conflict

Red Hat

7.5

receipt

Source: Red Hat
Its words: 7.5
Read by: field:cvss3_score
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-53071",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2026:67723",
    "RHSA-2026:65710",
    "RHSA-2026:42552",
    "RHSA-2026:43307",
    "RHSA-2026:67721",
    "RHSA-2026:42919",
    "RHSA-2026:42550",
    "RHSA-2026:73645",
    "RHSA-2026:65711"
  ],
  "affected_packages": [
    "kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10",
    "kernel-0:5.14.0-284.191.1.el9_2",
    "kernel-0:4.18.0-305.206.1.el8_4",
    "kernel-0:6.12.0-211.37.1.el10_2",
    "kernel-0:4.18.0-553.146.1.el8_10",
    "kernel-0:4.18.0-372.213.1.el8_6",
    "kernel-0:5.14.0-687.29.1.el9_8",
    "kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2",
    "kernel-0:5.14.0-427.153.1.el9_4"
  ],
  "bugzilla": "2492458",
  "bugzilla_description": "kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
  "cvss3_score": "7.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-06-24T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-53071.json",
  "severity": "moderate"
}

—

CVSS vector

cvss_vector

not compared

NVD

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

receipt

Source: NVD
Its words: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.vectorString || field:cve.metrics.cvssMetricV31[].cvssData.vectorString
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2026-09-29 09:45 UTC	—

What the source handed over

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    "descriptions": [
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        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
      }
    ],
    "id": "CVE-2026-53071",
    "lastModified": "2026-09-16T13:18:02.357",
    "metrics": {
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "type": "Secondary"
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            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "type": "Secondary"
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    "published": "2026-06-24T17:17:20.843",
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        "type": "Primary"
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        "description": [
          {
            "lang": "en",
            "value": "CWE-416"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

—

CVSS vector

cvss_vector

not compared

Red Hat

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

receipt

Source: Red Hat
Its words: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Read by: field:cvss3_scoring_vector
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

2026-10-06 13:01 UTC	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2026-09-29 09:44 UTC	—

What the source handed over

{
  "CVE": "CVE-2026-53071",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2026:67723",
    "RHSA-2026:65710",
    "RHSA-2026:42552",
    "RHSA-2026:43307",
    "RHSA-2026:67721",
    "RHSA-2026:42919",
    "RHSA-2026:42550",
    "RHSA-2026:73645",
    "RHSA-2026:65711"
  ],
  "affected_packages": [
    "kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10",
    "kernel-0:5.14.0-284.191.1.el9_2",
    "kernel-0:4.18.0-305.206.1.el8_4",
    "kernel-0:6.12.0-211.37.1.el10_2",
    "kernel-0:4.18.0-553.146.1.el8_10",
    "kernel-0:4.18.0-372.213.1.el8_6",
    "kernel-0:5.14.0-687.29.1.el9_8",
    "kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2",
    "kernel-0:5.14.0-427.153.1.el9_4"
  ],
  "bugzilla": "2492458",
  "bugzilla_description": "kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
  "cvss3_score": "7.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-06-24T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-53071.json",
  "severity": "moderate"
}

—

CWE

cwe

different words

NVD

CWE-667, CWE-416

receipt

Source: NVD
Its words: CWE-667, CWE-416
Read by: field:cve.weaknesses[].description[].value
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	CWE-667, CWE-416
2026-09-29 09:45 UTC	—

What the source handed over

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            "vendor": "Red Hat"
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    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
      }
    ],
    "id": "CVE-2026-53071",
    "lastModified": "2026-09-16T13:18:02.357",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "type": "Secondary"
        },
        {
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            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          },
          "exploitabilityScore": 1.6,
          "impactScore": 5.9,
          "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-06-24T17:17:20.843",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
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        ],
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.json"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-667"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-416"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

—

CWE

cwe

different words

Red Hat

CWE-416

receipt

Source: Red Hat
Its words: CWE-416
Read by: field:CWE
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-53071",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2026:67723",
    "RHSA-2026:65710",
    "RHSA-2026:42552",
    "RHSA-2026:43307",
    "RHSA-2026:67721",
    "RHSA-2026:42919",
    "RHSA-2026:42550",
    "RHSA-2026:73645",
    "RHSA-2026:65711"
  ],
  "affected_packages": [
    "kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10",
    "kernel-0:5.14.0-284.191.1.el9_2",
    "kernel-0:4.18.0-305.206.1.el8_4",
    "kernel-0:6.12.0-211.37.1.el10_2",
    "kernel-0:4.18.0-553.146.1.el8_10",
    "kernel-0:4.18.0-372.213.1.el8_6",
    "kernel-0:5.14.0-687.29.1.el9_8",
    "kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2",
    "kernel-0:5.14.0-427.153.1.el9_4"
  ],
  "bugzilla": "2492458",
  "bugzilla_description": "kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
  "cvss3_score": "7.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-06-24T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-53071.json",
  "severity": "moderate"
}

—

Packages

packages

Red Hat

kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10, kernel-0:5.14.0-284.191.1.el9_2, kernel-0:4.18.0-305.206.1.el8_4, kernel-0:6.12.0-211.37.1.el10_2, kernel-0:4.18.0-553.146.1.el8_10, kernel-0:4.18.0-372.213.1.el8_6, kernel-0:5.14.0-687.29.1.el9_8, kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2, kernel-0:5.14.0-427.153.1.el9_4

receipt

Source: Red Hat
Its words: kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10, kernel-0:5.14.0-284.191.1.el9_2, kernel-0:4.18.0-305.206.1.el8_4, kernel-0:6.12.0-211.37.1.el10_2, kernel-0:4.18.0-553.146.1.el8_10, kernel-0:4.18.0-372.213.1.el8_6, kernel-0:5.14.0-687.29.1.el9_8, kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2, kernel-0:5.14.0-427.153.1.el9_4
Read by: field:affected_packages[]
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

2026-10-06 13:01 UTC	kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10, kernel-0:5.14.0-284.191.1.el9_2, kernel-0:4.18.0-305.206.1.el8_4, kernel-0:6.12.0-211.37.1.el10_2, kernel-0:4.18.0-553.146.1.el8_10, kernel-0:4.18.0-372.213.1.el8_6, kernel-0:5.14.0-687.29.1.el9_8, kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2, kernel-0:5.14.0-427.153.1.el9_4
2026-09-29 09:44 UTC	kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10, kernel-0:5.14.0-284.191.1.el9_2, kernel-0:4.18.0-305.206.1.el8_4, kernel-0:6.12.0-211.37.1.el10_2, kernel-0:4.18.0-553.146.1.el8_10, kernel-0:4.18.0-372.213.1.el8_6, kernel-0:5.14.0-687.29.1.el9_8, kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2

What the source handed over

{
  "CVE": "CVE-2026-53071",
  "CWE": "CWE-416",
  "advisories": [
    "RHSA-2026:67723",
    "RHSA-2026:65710",
    "RHSA-2026:42552",
    "RHSA-2026:43307",
    "RHSA-2026:67721",
    "RHSA-2026:42919",
    "RHSA-2026:42550",
    "RHSA-2026:73645",
    "RHSA-2026:65711"
  ],
  "affected_packages": [
    "kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10",
    "kernel-0:5.14.0-284.191.1.el9_2",
    "kernel-0:4.18.0-305.206.1.el8_4",
    "kernel-0:6.12.0-211.37.1.el10_2",
    "kernel-0:4.18.0-553.146.1.el8_10",
    "kernel-0:4.18.0-372.213.1.el8_6",
    "kernel-0:5.14.0-687.29.1.el9_8",
    "kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2",
    "kernel-0:5.14.0-427.153.1.el9_4"
  ],
  "bugzilla": "2492458",
  "bugzilla_description": "kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
  "cvss3_score": "7.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-06-24T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-53071.json",
  "severity": "moderate"
}

—

Product

product

NVD

Linux

receipt

Source: NVD
Its words: Linux
Read by: field:cve.affected[].affectedData[].product
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	Linux
2026-09-29 09:45 UTC	—

What the source handed over

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            "product": "Linux",
            "programFiles": [
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            ],
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                "versionType": "git"
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                "versionType": "git"
              },
              {
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              },
              {
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                "versionType": "git"
              }
            ]
          },
          {
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            "product": "Linux",
            "programFiles": [
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            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
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              },
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                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
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                "status": "unaffected",
                "version": "5.10.258",
                "versionType": "semver"
              },
              {
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                "status": "unaffected",
                "version": "5.15.209",
                "versionType": "semver"
              },
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                "status": "unaffected",
                "version": "6.1.175",
                "versionType": "semver"
              },
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                "status": "unaffected",
                "version": "6.6.141",
                "versionType": "semver"
              },
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                "status": "unaffected",
                "version": "6.12.91",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.33",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.0.*",
                "status": "unaffected",
                "version": "7.0.10",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.1",
                "versionType": "original_commit_for_fix"
              }
            ]
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        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      },
      {
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            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
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                "versionType": "rpm"
              }
            ]
          },
          {
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            "cpes": [
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            ],
            "defaultStatus": "affected",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-553.146.1.rt7.487.el8_10",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-553.146.1.el8_10",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_aus:8.4"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-305.206.1.el8_4",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
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            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-305.206.1.el8_4",
                "versionType": "rpm"
              }
            ]
          },
          {
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            "cpes": [
              "cpe:/o:redhat:rhel_aus:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-372.213.1.el8_6",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_eus_long_life:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:4.18.0-372.213.1.el8_6",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9",
              "cpe:/o:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:5.14.0-687.29.1.el9_8",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:6"
            ],
            "defaultStatus": "unaffected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 6",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:7"
            ],
            "defaultStatus": "unaffected",
            "packageName": "kernel",
            "product": "Red Hat Enterprise Linux 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:7"
            ],
            "defaultStatus": "unaffected",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 7",
            "vendor": "Red Hat"
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
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            ],
            "defaultStatus": "affected",
            "packageName": "kernel-rt",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "33983DD1-6F5C-4A20-A9AF-24DABFA46B60",
                "versionEndExcluding": "5.10.258",
                "versionStartIncluding": "5.7",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "919C10A9-7951-4A74-BADD-C135A0A8D8B4",
                "versionEndExcluding": "5.15.209",
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                "versionEndExcluding": "6.6.141",
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              {
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                "versionEndExcluding": "6.12.91",
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                "versionEndExcluding": "6.18.33",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4",
                "versionEndExcluding": "7.0.10",
                "versionStartIncluding": "6.19",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
      }
    ],
    "id": "CVE-2026-53071",
    "lastModified": "2026-09-16T13:18:02.357",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "type": "Secondary"
        },
        {
          "cvssData": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.6,
          "impactScore": 5.9,
          "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-06-24T17:17:20.843",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c"
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      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
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      },
      {
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      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-667"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-416"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

—

Severity

severity

conflict

NVD

HIGH

From 7.0 to 8.9.

receipt

Source: NVD
Its words: HIGH
Read by: field:cve.metrics.cvssMetricV31[type=Primary].cvssData.baseSeverity || field:cve.metrics.cvssMetricV31[].cvssData.baseSeverity
Said since: 2026-10-06 12:29 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-10-06 12:29 UTC	HIGH
2026-09-29 09:45 UTC	—

What the source handed over

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        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
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    "lastModified": "2026-09-16T13:18:02.357",
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            "privilegesRequired": "NONE",
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    "vulnStatus": "Modified",
    "weaknesses": [
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            "value": "CWE-667"
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        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
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}

high

Severity

severity

conflict

Red Hat

moderate

A flaw that is harder to exploit, or whose impact is limited.

receipt

Source: Red Hat
Its words: moderate
Read by: field:severity
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

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  "CVE": "CVE-2026-53071",
  "CWE": "CWE-416",
  "advisories": [
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    "RHSA-2026:65710",
    "RHSA-2026:42552",
    "RHSA-2026:43307",
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    "RHSA-2026:42919",
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    "RHSA-2026:73645",
    "RHSA-2026:65711"
  ],
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    "kernel-0:5.14.0-427.153.1.el9_4"
  ],
  "bugzilla": "2492458",
  "bugzilla_description": "kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp",
  "cvss3_score": "7.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-06-24T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-53071.json",
  "severity": "moderate"
}

medium

Status

status

NVD

Modified

receipt

Source: NVD
Its words: Modified
Read by: field:cve.vulnStatus
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

What the source handed over

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        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp\n\nl2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding\nl2cap_chan_lock(). Every other l2cap_chan_del() caller in the file\nacquires the lock first. A remote BLE device can send a crafted\nL2CAP ECRED reconfiguration response to corrupt the channel list\nwhile another thread is iterating it.\n\nAdd l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(),\nand l2cap_chan_unlock() and l2cap_chan_put() after, matching the\npattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del()."
      }
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    "published": "2026-06-24T17:17:20.843",
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    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-667"
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        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
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            "value": "CWE-416"
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        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

—

Vendor

vendor

NVD

Linux

receipt

Source: NVD
Its words: Linux
Read by: field:cve.affected[].affectedData[].vendor
Said since: 2026-09-29 17:49 UTC
Last answered: 2026-10-06 12:41 UTC
Original: open at the source

2026-09-29 17:49 UTC	Linux
2026-09-29 09:45 UTC	—

What the source handed over

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      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "tags": [
          "Third Party Advisory"
        ],
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492458"
      },
      {
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "tags": [
          "Third Party Advisory"
        ],
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.json"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-667"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-416"
          }
        ],
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ]
  }
}

—

Every claim, by kind

vulnerability

kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp zetlyn/cve-redhat · 2026-06-24	cvss 7.5 cvss_vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H cwe CWE-416 packages kernel-rt-0:4.18.0-553.146.1.rt7.487.el8_10, kernel-0:5.14.0-284.191.1.el9_2, kernel-0:4.18.0-305.206.1.el8_4, kernel-0:6.12.0-211.37.1.el10_2, kernel-0:4.18.0-553.146.1.el8_10, kernel-0:4.18.0-372.213.1.el8_6, kernel-0:5.14.0-687.29.1.el9_8, kernel-rt-0:5.14.0-284.191.1.rt14.476.el9_2, kernel-0:5.14.0-427.153.1.el9_4 severity moderate	source
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp l2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding l2cap_chan_lock(). Every other l2cap_chan_del() caller in the file acquires the lock first. A remote BLE device can send a crafted L2CAP ECRED reconfiguration response to corrupt the channel list while another thread is iterating it. Add l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(), and l2cap_chan_unlock() and l2cap_chan_put() after, matching the pattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del(). zetlyn/cve-nvd · 2026-06-24	cvss 8.8 cvss_vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H cwe CWE-667, CWE-416 product Linux severity HIGH status Modified vendor Linux	source