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VulnerabilityPublished Updated

CVE-2026-74432: Linux kernel · MSG_PEEK

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in e473cd3046a1aaec1e39af5df2042ce7c04d5e74 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 13:18 UTC

Severity
Low

Rated Low by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in e473cd3046a1aaec1e39af5df2042ce7c04d5e74, 86eff3140c9d4b52bba13d1cba266da933403e51, 6.16 +7

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • >=6.6.100 <6.6.145
  • >=6.12.40 <6.12.97
  • >=5.10.266 <5.11
  • >=6.1.191 <6.2
  • >=6.15.8 <6.16
Fixed in
  • e473cd3046a1aaec1e39af5df2042ce7c04d5e74
  • 86eff3140c9d4b52bba13d1cba266da933403e51
  • 6.16
  • 6.12.97
  • 6.6.145
  • 6.2
  • 5.11
  • 04c7103dc0923cc6ac95b97aa66bab70da7ace84
  • 4bdb9e471f5b1ac9cbe4add5de7ff085a0ec303c
  • 2b69b61057eb0b3db9ad754ef0f1436b7af3a9f5
LinuxLinuxAffected
  • =6.16
Fixed in–

AI-suggested

This vulnerability has been fixed in Linux kernel versions 5.11, 6.2, 6.6.145, 6.12.97, and 6.16. Users and administrators should upgrade to these or later versions to remediate the issue. No additional mitigation is required beyond applying the official kernel updates.

Description

A vulnerability in the Linux kernel's rxrpc subsystem caused a reference leak when using recvmsg with the MSG_PEEK flag. The flaw was that rxrpc_recvmsg() did not properly drop the reference on an already-released call if MSG_PEEK was specified, potentially leading to resource leaks. This issue has been fixed in multiple Linux kernel versions starting from 5.11, 6.2, 6.6.145, 6.12.97, and 6.16.

References

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