GHSA-3535-JV42-VVC3

Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-04-22 15:31
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex

MEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0) queue teardown paths. This can race request object cleanup against vb2 queue cancellation and lead to use-after-free reports.

We already serialize request queueing against STREAMON/OFF with req_queue_mutex. Extend that serialization to REQBUFS, and also take the same mutex in media_request_ioctl_reinit() so REINIT is in the same exclusion domain.

This keeps request cleanup and queue cancellation from running in parallel for request-capable devices.

Show details on source website
To clipboard 

{
  "affected": [],
  "aliases": [
    "CVE-2026-31473"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-22T14:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex\n\nMEDIA_REQUEST_IOC_REINIT can run concurrently with VIDIOC_REQBUFS(0)\nqueue teardown paths. This can race request object cleanup against vb2\nqueue cancellation and lead to use-after-free reports.\n\nWe already serialize request queueing against STREAMON/OFF with\nreq_queue_mutex. Extend that serialization to REQBUFS, and also take\nthe same mutex in media_request_ioctl_reinit() so REINIT is in the\nsame exclusion domain.\n\nThis keeps request cleanup and queue cancellation from running in\nparallel for request-capable devices.",
  "id": "GHSA-3535-jv42-vvc3",
  "modified": "2026-04-22T15:31:42Z",
  "published": "2026-04-22T15:31:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31473"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.