PT-2026-34378 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-05-03 · CVE-2026-31473

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition exists in the media mc and v4l2 components where MEDIA REQUEST IOC REINIT can run concurrently with VIDIOC REQBUFS(0) queue teardown paths. This concurrency can cause request object cleanup to race against vb2 queue cancellation, potentially leading to use-after-free reports, which occurs when the system continues to use a memory address after it has been freed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31473

ECHO-B947-D52E-7241

OESA-2026-2175

Affected Products

Linux Kernel

References · 22

• https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31473 · Security Note
• https://osv.dev/vulnerability/OESA-2026-2175 · Vendor Advisory
• https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01 · Patch
• https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0 · Patch
• https://ubuntu.com/security/CVE-2026-31473 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31473 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31431 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-31473 · Security Note
• https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112d · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31473 · Vendor Advisory
• https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5 · Patch
• https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773 · Patch
• https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56 · Patch
• https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1 · Patch