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VulnerabilityPublished Updated

CVE-2026-98265: Linux kernel · ALSA: usb-audio: Clamp implicit feedback packet count to URB capacity

Source GCVE Database

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Authoritative record:CVE-2026-98265· High

Not known to be exploited · fixed in e44cee1bf51e606f3e70a213eb5a1abb3fa56a81 : patch Linux kernel soon.

Data as of 30 Oct 2026, 17:18 UTC

Severity
High

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

Thin evidence

One scorer or none
Patch
Available – fixed in e44cee1bf51e606f3e70a213eb5a1abb3fa56a81, ad279ba0dc1781229f5b52f58d38d56960400e06, ab77e3f453c5f2499c08d6e8e218501d25bab39e +10

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Oct 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
  • >=5.15.202 <5.15.224
  • >=6.1.165 <6.1.191
  • >=6.6.128 <6.6.160
  • >=6.12.75 <6.12.112
  • >=6.18.16 <6.18.54
  • >=6.19.6 <6.20
Fixed in
  • e44cee1bf51e606f3e70a213eb5a1abb3fa56a81
  • ad279ba0dc1781229f5b52f58d38d56960400e06
  • ab77e3f453c5f2499c08d6e8e218501d25bab39e
  • 79c55a7b5d71cf2a6bbd4bd7698e1b10b70f813a
  • 76a986c980bb502c7688d605ac7a67fd257a9a1b
  • 8b637ab10e40e01b452f4aff66dad335a9b89a16
  • 6c5c986f761756a6ff7b3aea51c11994fc2464e5
  • 6.20
  • 6.18.54
  • 6.12.112
  • 6.6.160
  • 6.1.191
  • 5.15.224
LinuxLinuxAffected
  • =7.0
Fixed in–

AI-suggested

A fix has been implemented in the Linux kernel to clamp the implicit feedback packet count to the allocated URB capacity, preventing out-of-bounds writes. Users should apply the official kernel updates that include this patch to remediate the vulnerability. No additional mitigations are required beyond applying the fixed kernel version.

Description

A vulnerability in the Linux kernel ALSA usb-audio driver allows out-of-bounds memory writes due to improper handling of implicit feedback packet counts. The issue arises when the packet count used for playback URBs exceeds the allocated URB capacity, leading to potential memory corruption.

References

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