CVE-2026-80966: Linux kernel · ALSA: portman2x4: Check card index validity at probe
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 13:47 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 11% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 11 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.
AI-suggested
A fix has been implemented in the Linux kernel to add proper validation of the card index in the portman2x4 driver. Users should update to a Linux kernel version that includes this fix. Since no vendor advisory or patch link is provided, check the official Linux kernel release notes or security advisories for the exact fixed version and apply the update accordingly.
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: portman2x4: Check card index validity at probe Although portman2x4 driver has a check of the given devptr->id value, it doesn't check for a negative id, which is often given as "none" or such value when bound via sysfs. This may lead to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range.
References
- nvd.nist.gov/vuln/detail/CVE-2026-80966 (opens in a new tab)
- git.kernel.org/stable/c/0ce391090809d610647f424b9b1dc24aa2c546fd (opens in a new tab)
- git.kernel.org/stable/c/3690ef20469d5959378260e2752f2314a2572913 (opens in a new tab)
- git.kernel.org/stable/c/d7ef7890e3e35b4ba09e76fc6b72047a1599a5e8 (opens in a new tab)
- git.kernel.org/stable/c/e1ce8ad1009b1736b3044b3324350dcfdd516f42 (opens in a new tab)
- msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-80966.json (opens in a new tab)
- support.microsoft.com/lifecycle (opens in a new tab)
- first.org/cvss (opens in a new tab)
- ubuntu.com/security/CVE-2026-80966 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-80966 (opens in a new tab)
- git.kernel.org/linus/3690ef20469d5959378260e2752f2314a2572913 (opens in a new tab)