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VulnerabilityPublished Updated

CVE-2026-74339: Linux kernel · ALSA: seq: Clear variable event pointer on read

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in f29243c211928114f8b906e0a3fee77c236f14c8 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 13:20 UTC

Severity
Medium

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

Thin evidence

One scorer or none
Patch
Available – fixed in f29243c211928114f8b906e0a3fee77c236f14c8, e0c3edd86414534cfd179fefe45b38c29c01ae7a, c2ac9287e89916da684c2a548798351e63eb59ee +5

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
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < f29243c211928114f8b906e0a3fee77c236f14c8
Fixed in
  • f29243c211928114f8b906e0a3fee77c236f14c8
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < e0c3edd86414534cfd179fefe45b38c29c01ae7a
Fixed in
  • e0c3edd86414534cfd179fefe45b38c29c01ae7a
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < c2ac9287e89916da684c2a548798351e63eb59ee
Fixed in
  • c2ac9287e89916da684c2a548798351e63eb59ee
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 705dd6dcbc0ea87351c660c1a6443f85f1001c76
Fixed in
  • 705dd6dcbc0ea87351c660c1a6443f85f1001c76
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 74ac1ce1f4afdb3b80b6742fa28fb86c8c51d31b
Fixed in
  • 74ac1ce1f4afdb3b80b6742fa28fb86c8c51d31b
LinuxLinuxAffected
  • ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, < 14fe4f75fd5309d6b75f8e840ada88912b374207
Fixed in
  • 14fe4f75fd5309d6b75f8e840ada88912b374207

AI-suggested

A fix is available and has been applied in the Linux kernel versions identified by the listed commit hashes. Users should update their Linux kernel to a version including these fixes to remediate the vulnerability. No additional mitigation actions are indicated by the vendor advisory.

Description

CVE-2026-74339 is a vulnerability in the Linux kernel ALSA sequencer interface where a variable event pointer is not cleared properly during a read operation. This allows a userspace sequencer client to read kernel memory addresses from the extension-cell kernel address in the event header. The issue has been resolved by clearing the temporary header pointer before copying data to userspace, preventing leakage of kernel addresses.

References

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