Vulnerability-Lookup

FKIE_CVE-2026-31473

Vulnerability from fkie_nvd - Published: 2026-04-22 14:16 - Updated: 2026-04-27 23:27

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	4.20
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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}

CVE-2026-31473 (GCVE-0-2026-31473)

Vulnerability from cvelistv5 – Published: 2026-04-22 13:54 – Updated: 2026-05-11 22:09

Title

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

Summary

Severity

7.8 (High)


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

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/331242998a7ade5c2…
https://git.kernel.org/stable/c/2c685e99efb3b3bd2…
https://git.kernel.org/stable/c/585fd9a2063dacce8…
https://git.kernel.org/stable/c/1a0d9083c24fbd5d2…
https://git.kernel.org/stable/c/d8549a453d5bdc0a7…
https://git.kernel.org/stable/c/72b9e81e0203f03c4…
https://git.kernel.org/stable/c/cf2023e84f0888f96…
https://git.kernel.org/stable/c/bef4f4a88b73e4cc5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < 331242998a7ade5c2f65e14988901614629f3db5 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < 2c685e99efb3b3bd2b78699fba6b1cf321975db0 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < 585fd9a2063dacce8b2820f675ef23d5d17434c5 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < 1a0d9083c24fbd5d22f7100f09d11e4d696a5f01 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < d8549a453d5bdc0a71de66ad47a1106703406a56 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < 72b9e81e0203f03c40f3adb457f55bd4c8eb112d (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < cf2023e84f0888f96f4b65dc0804e7f3651969c1 (git) Affected: 6093d3002eabd7c2913d97f1d1f4ce34b072acf9 , < bef4f4a88b73e4cc550d25f665b8a9952af22773 (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (semver) Unaffected: 6.12.80 , ≤ 6.12.* (semver) Unaffected: 6.18.21 , ≤ 6.18.* (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/media/mc/mc-request.c",
            "drivers/media/v4l2-core/v4l2-ioctl.c"
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        {
          "url": "https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56"
        },
        {
          "url": "https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1"
        },
        {
          "url": "https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773"
        }
      ],
      "title": "media: mc, v4l2: serialize REINIT and REQBUFS with req_queue_mutex",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31473",
    "datePublished": "2026-04-22T13:54:00.970Z",
    "dateReserved": "2026-03-09T15:48:24.098Z",
    "dateUpdated": "2026-05-11T22:09:24.920Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Action not permitted

FKIE_CVE-2026-31473

CVE-2026-31473 (GCVE-0-2026-31473)

Tags

Sightings

Nomenclature