HOMEVULNERABILITIESCVE-2026-31473
HIGH

CVE-2026-31473

Published: April 22, 2026· Updated: Apr 27, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-31473 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (8)

→
https://git.kernel.org/stable/c/1a0d9083c24fbd5d22f7100f09d11e4d696a5f01Patch
→
https://git.kernel.org/stable/c/2c685e99efb3b3bd2b78699fba6b1cf321975db0Patch
→
https://git.kernel.org/stable/c/331242998a7ade5c2f65e14988901614629f3db5Patch
→
https://git.kernel.org/stable/c/585fd9a2063dacce8b2820f675ef23d5d17434c5Patch
→
https://git.kernel.org/stable/c/72b9e81e0203f03c40f3adb457f55bd4c8eb112dPatch
→
https://git.kernel.org/stable/c/bef4f4a88b73e4cc550d25f665b8a9952af22773Patch
→
https://git.kernel.org/stable/c/cf2023e84f0888f96f4b65dc0804e7f3651969c1Patch
→
https://git.kernel.org/stable/c/d8549a453d5bdc0a71de66ad47a1106703406a56Patch

Quick Facts

CVE IDCVE-2026-31473
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 22, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31473 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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