kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount

cve CVE-2026-46158 2 sources, 2 claims · Watch

Red Hat writes:
kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount the claim

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”

What each source says

Property Source Said Means here

Cvss

cvss

conflict

NVD

5.5

receipt

Source: NVD
Its words: 5.5
Read by: field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since: 2026-09-29 09:45 UTC
Last answered: 2026-10-05 12:24 UTC
Original: open at the source

What the source handed over

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  }
}

—

Cvss

cvss

conflict

Red Hat

receipt

Source: Red Hat
Its words: 7.0
Read by: field:cvss3_score
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-05 12:24 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-46158",
  "CWE": "CWE-911",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2482639",
  "bugzilla_description": "kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount",
  "cvss3_score": "7.0",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-05-28T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-46158.json",
  "severity": "moderate"
}

—

Cwe

cwe

Red Hat

CWE-911

receipt

Source: Red Hat
Its words: CWE-911
Read by: field:CWE
Said since: 2026-09-29 09:44 UTC
Last answered: 2026-10-05 12:24 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-46158",
  "CWE": "CWE-911",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2482639",
  "bugzilla_description": "kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount",
  "cvss3_score": "7.0",
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  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-05-28T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-46158.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: 2026-10-05 12:24 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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}

—

Severity

severity

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: 2026-10-05 12:24 UTC
Original: open at the source

What the source handed over

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  "CWE": "CWE-911",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2482639",
  "bugzilla_description": "kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount",
  "cvss3_score": "7.0",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-05-28T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-46158.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: 2026-10-05 12:24 UTC
Original: open at the source

What the source handed over

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      }
    ]
  }
}

—

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: 2026-10-05 12:24 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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/f5555a6d7c472849fdf2b426e3d0a85103118793"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Modified",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "NVD-CWE-noinfo"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  }
}

—

vulnerability

kernel: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount zetlyn/cve-redhat · 2026-05-28	cvss 7 cwe CWE-911 severity moderate	source
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: always decrease sk refcount When an ADD_ADDR is retransmitted, the sk is held in sk_reset_timer(). It should then be released in all cases at the end. Some (unlikely) checks were returning directly instead of calling sock_put() to decrease the refcount. Jump to a new 'exit' label to call __sock_put() (which will become sock_put() in the next commit) to fix this potential leak. While at it, drop the '!msk' check which cannot happen because it is never reset, and explicitly mark the remaining one as "unlikely". zetlyn/cve-nvd · 2026-05-28	cvss 5.5 product Linux status Modified vendor Linux	source