kernel: accel/ivpu: Validate firmware log buffer metadata

cve CVE-2026-97916 3 sources, 4 claims · Watch

Red Hat writes:
kernel: accel/ivpu: Validate firmware log buffer metadata the claim

Severity they disagree: unknown GitHub advisories
moderate Red Hat
CVSS: 5.5 Red Hat
Vendor: Linux NVD
Product: Linux NVD
CWE: CWE-367 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

Timeline

2026-09-25	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Validate...	GitHub advisories
2026-09-25	first spoke of it: In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Validate firmware log buffer metadata The tracing log headers parsed by fw_log_print_buffer() reside in DMA-shared BOs that the NPU firmware can write to. fw_log_from_bo() validated log->header_size and log->size, but fw_log_print_buffer() re-read those same fields from shared memory afterwards, allowing a TOCTOU where firmware changes them between the check and the use, and making the host dereference out-of-bounds addresses while printing logs. Snapshot the validated values once with READ_ONCE() and pass them down explicitly in a new struct ivpu_fw_log_desc instead of re-reading them from the shared struct.	NVD
2026-09-25	first spoke of it: kernel: accel/ivpu: Validate firmware log buffer metadata	Red Hat

What it is to other things

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

made_by	`linux` NVD says “Linux”
affects	`linux/linux` NVD says “Linux · Linux”

Every value, with what each source said and its receipt

Property Source Said Means here

CVSS

cvss

Red Hat

5.5

receipt

Source: Red Hat
Its words: 5.5
Read by: field:cvss3_score
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97916",
  "CWE": "CWE-367",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541156",
  "bugzilla_description": "kernel: accel/ivpu: Validate firmware log buffer metadata",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97916.json",
  "severity": "moderate"
}

—

CVSS vector

cvss_vector

Red Hat

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

receipt

Source: Red Hat
Its words: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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

What the source handed over

{
  "CVE": "CVE-2026-97916",
  "CWE": "CWE-367",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541156",
  "bugzilla_description": "kernel: accel/ivpu: Validate firmware log buffer metadata",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97916.json",
  "severity": "moderate"
}

—

CWE

cwe

Red Hat

CWE-367

receipt

Source: Red Hat
Its words: CWE-367
Read by: field:CWE
Said since: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97916",
  "CWE": "CWE-367",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541156",
  "bugzilla_description": "kernel: accel/ivpu: Validate firmware log buffer metadata",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97916.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

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "8ec3d6972f1440fae6c8dadd1859892775208759",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "40868f80a89199630b03d4457876f9a1feba0660",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "b1555f63ee1a680f280bc18e8dac416f250e2ec3",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "0724afc55c77c36c7feb9a7264b02aa7593c5c2d",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "6.6"
              },
              {
                "lessThan": "6.6",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Validate firmware log buffer metadata\n\nThe tracing log headers parsed by fw_log_print_buffer() reside in\nDMA-shared BOs that the NPU firmware can write to.\n\nfw_log_from_bo() validated log->header_size and log->size, but\nfw_log_print_buffer() re-read those same fields from shared memory\nafterwards, allowing a TOCTOU where firmware changes them between the\ncheck and the use, and making the host dereference out-of-bounds\naddresses while printing logs.\n\nSnapshot the validated values once with READ_ONCE() and pass them down\nexplicitly in a new struct ivpu_fw_log_desc instead of re-reading them\nfrom the shared struct."
      }
    ],
    "id": "CVE-2026-97916",
    "lastModified": "2026-09-25T11:17:18.593",
    "metrics": {},
    "published": "2026-09-25T11:17:18.593",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/0724afc55c77c36c7feb9a7264b02aa7593c5c2d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/40868f80a89199630b03d4457876f9a1feba0660"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/8ec3d6972f1440fae6c8dadd1859892775208759"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b1555f63ee1a680f280bc18e8dac416f250e2ec3"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

Severity

severity

conflict

GitHub advisories

unknown

receipt

Source: GitHub advisories
Said since: 2026-09-26 15:00 UTC
Last answered: 2026-10-06 13:46 UTC
Original: open at the source

This source has not kept a receipt for this claim yet. The next update that reads it will.

—

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: 2026-10-06 13:01 UTC
Last answered: 2026-10-06 13:02 UTC
Original: open at the source

What the source handed over

{
  "CVE": "CVE-2026-97916",
  "CWE": "CWE-367",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2541156",
  "bugzilla_description": "kernel: accel/ivpu: Validate firmware log buffer metadata",
  "cvss3_score": "5.5",
  "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-09-25T00:00:00Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-97916.json",
  "severity": "moderate"
}

medium

Status

status

NVD

Received

receipt

Source: NVD
Its words: Received
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

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "8ec3d6972f1440fae6c8dadd1859892775208759",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "40868f80a89199630b03d4457876f9a1feba0660",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "b1555f63ee1a680f280bc18e8dac416f250e2ec3",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "0724afc55c77c36c7feb9a7264b02aa7593c5c2d",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "6.6"
              },
              {
                "lessThan": "6.6",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Validate firmware log buffer metadata\n\nThe tracing log headers parsed by fw_log_print_buffer() reside in\nDMA-shared BOs that the NPU firmware can write to.\n\nfw_log_from_bo() validated log->header_size and log->size, but\nfw_log_print_buffer() re-read those same fields from shared memory\nafterwards, allowing a TOCTOU where firmware changes them between the\ncheck and the use, and making the host dereference out-of-bounds\naddresses while printing logs.\n\nSnapshot the validated values once with READ_ONCE() and pass them down\nexplicitly in a new struct ivpu_fw_log_desc instead of re-reading them\nfrom the shared struct."
      }
    ],
    "id": "CVE-2026-97916",
    "lastModified": "2026-09-25T11:17:18.593",
    "metrics": {},
    "published": "2026-09-25T11:17:18.593",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/0724afc55c77c36c7feb9a7264b02aa7593c5c2d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/40868f80a89199630b03d4457876f9a1feba0660"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/8ec3d6972f1440fae6c8dadd1859892775208759"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b1555f63ee1a680f280bc18e8dac416f250e2ec3"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

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

{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "8ec3d6972f1440fae6c8dadd1859892775208759",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "40868f80a89199630b03d4457876f9a1feba0660",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "b1555f63ee1a680f280bc18e8dac416f250e2ec3",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              },
              {
                "lessThan": "0724afc55c77c36c7feb9a7264b02aa7593c5c2d",
                "status": "affected",
                "version": "d4e4257afa6ed5205eda993180401fc2c20e4b60",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "drivers/accel/ivpu/ivpu_fw_log.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "6.6"
              },
              {
                "lessThan": "6.6",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.12.*",
                "status": "unaffected",
                "version": "6.12.111",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.53",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.2.*",
                "status": "unaffected",
                "version": "7.2.7",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.3-rc3",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/ivpu: Validate firmware log buffer metadata\n\nThe tracing log headers parsed by fw_log_print_buffer() reside in\nDMA-shared BOs that the NPU firmware can write to.\n\nfw_log_from_bo() validated log->header_size and log->size, but\nfw_log_print_buffer() re-read those same fields from shared memory\nafterwards, allowing a TOCTOU where firmware changes them between the\ncheck and the use, and making the host dereference out-of-bounds\naddresses while printing logs.\n\nSnapshot the validated values once with READ_ONCE() and pass them down\nexplicitly in a new struct ivpu_fw_log_desc instead of re-reading them\nfrom the shared struct."
      }
    ],
    "id": "CVE-2026-97916",
    "lastModified": "2026-09-25T11:17:18.593",
    "metrics": {},
    "published": "2026-09-25T11:17:18.593",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/0724afc55c77c36c7feb9a7264b02aa7593c5c2d"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/40868f80a89199630b03d4457876f9a1feba0660"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/8ec3d6972f1440fae6c8dadd1859892775208759"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "url": "https://git.kernel.org/stable/c/b1555f63ee1a680f280bc18e8dac416f250e2ec3"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Received"
  }
}

—

Every claim, by kind

vulnerability

kernel: accel/ivpu: Validate firmware log buffer metadata zetlyn/cve-redhat · 2026-09-25	cvss 5.5 cvss_vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H cwe CWE-367 severity moderate	source
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Validate firmware log buffer metadata The tracing log headers parsed by fw_log_print_buffer() reside in DMA-shared BOs that the NPU firmware can write to. fw_log_from_bo() validated log->header_size and log->size, but fw_log_print_buffer() re-read those same fields from shared memory afterwards, allowing a TOCTOU where firmware changes them between the check and the use, and making the host dereference out-of-bounds addresses while printing logs. Snapshot the validated values once with READ_ONCE() and pass them down explicitly in a new struct ivpu_fw_log_desc instead of re-reading them from the shared struct. zetlyn/cve-nvd · 2026-09-25	product Linux status Received vendor Linux	source
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Validate... zetlyn/cve-ghsa · 2026-09-25	severity unknown	source
In the Linux kernel, the following vulnerability has been resolved: accel/ivpu: Validate... zetlyn/cve-ghsa · 2026-09-25	severity unknown	source