CVE-2026-98066: Linux kernel · ALSA: caiaq: Fix potential double-free at error path
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ddfff1cec52b7deec6c770ba85de4dab6221d0a2 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 14:05 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ddfff1cec52b7deec6c770ba85de4dab6221d0a2, da93fd9002d980bb02b729c5d5aeefeb252dd110, b629ae7b3eddc6812d5af3614b8c1bd76d65fa75 +12
Exploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
The vulnerability has been fixed in Linux kernel versions 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, and 7.1. Users and administrators should update to these or later versions to remediate the issue.
Description
A double-free vulnerability was identified and fixed in the ALSA caiaq driver within the Linux kernel. The issue involved improper resource management where some audio resources, such as URBs, could be freed multiple times along error paths. The fix ensures that the common destructor function is called properly and resource pointers are cleared to prevent double-free conditions.
References
- git.kernel.org/stable/c/ddfff1cec52b7deec6c770ba85de4dab6221d0a2 (opens in a new tab)
- git.kernel.org/stable/c/da93fd9002d980bb02b729c5d5aeefeb252dd110 (opens in a new tab)
- git.kernel.org/stable/c/b6cd6f1664a0bc8038b9baa7e6f5fe8e4142d056 (opens in a new tab)
- git.kernel.org/stable/c/75b20534d7a37e091db585f8b505a3b77b7e81a8 (opens in a new tab)
- git.kernel.org/stable/c/2883d65a3d9a8d9a682cdb003e6ab7fb28bb17f8 (opens in a new tab)
- git.kernel.org/stable/c/1dd715ca0568e4833ed5878f49b028b449941096 (opens in a new tab)
- git.kernel.org/stable/c/b629ae7b3eddc6812d5af3614b8c1bd76d65fa75 (opens in a new tab)
- git.kernel.org/stable/c/3b26ceef88c110f4d188387cffa0df78657be904 (opens in a new tab)