CVE-2026-98066: Linux kernel · ALSA: caiaq: Fix potential double-free at error path
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 12:55 UTC
Rated by Threat Radar · 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.
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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: caiaq: Fix potential double-free at error path The fix for caiaq driver's resource management to handle the errors tries to release the resources in a common destructor call, but as a sashiko review for another patch suggested, some of the audio resources such as URBs have been already freed, and this may lead to a double-free. For addressing the double-free, call the common destructor function from each place, and assure that the resource pointers get cleared.
References
- ubuntu.com/security/CVE-2026-98066 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-98066 (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)
- nvd.nist.gov/vuln/detail/CVE-2026-98066 (opens in a new tab)
- git.kernel.org/stable/c/75b20534d7a37e091db585f8b505a3b77b7e81a8 (opens in a new tab)
- git.kernel.org/stable/c/b6cd6f1664a0bc8038b9baa7e6f5fe8e4142d056 (opens in a new tab)
- git.kernel.org/stable/c/da93fd9002d980bb02b729c5d5aeefeb252dd110 (opens in a new tab)
- git.kernel.org/stable/c/ddfff1cec52b7deec6c770ba85de4dab6221d0a2 (opens in a new tab)