CVE-2026-31473

HIGH EPSS 2.6%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
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Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 15

VendorProductVersionRange
linuxlinux_kernel*≥4.20.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.131
linuxlinux_kernel*≥6.7  –  <6.12.80
linuxlinux_kernel*≥6.13  –  <6.18.21
linuxlinux_kernel*≥6.19  –  <6.19.11
linuxlinux_kernel4.20any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56
    Patch