In the Linux kernel, the following vulnerability has been resolved: ALSA: portman2x4: Check card index validity at probe Although portman2x4 driver… (CVE-2026-80966)
A vulnerability in the Linux kernel ALSA portman2x4 driver was resolved by adding a sanity check for the card index during probe. The driver previously did not validate negative card index values, which could lead to out-of-bounds access of internal arrays. This flaw was addressed by correcting and warning on invalid card index values.
AI Analysis
Technical Summary
The ALSA portman2x4 driver in the Linux kernel lacked validation for negative card index values during device probing. Although the driver checked the devptr->id value, it did not verify if the id was negative, which can occur when the device is bound via sysfs with a 'none' or similar value. This omission could cause out-of-bounds (OOB) access to the index[] array and other parameters. The vulnerability was resolved by adding a sanity check to validate the card index and to warn or correct invalid values.
Potential Impact
This vulnerability could lead to out-of-bounds memory access within the ALSA portman2x4 driver, potentially causing system instability or crashes. No information is provided about exploitation in the wild or further impact such as privilege escalation or code execution.
Mitigation Recommendations
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.
In the Linux kernel, the following vulnerability has been resolved: ALSA: portman2x4: Check card index validity at probe Although portman2x4 driver… (CVE-2026-80966)
Description
A vulnerability in the Linux kernel ALSA portman2x4 driver was resolved by adding a sanity check for the card index during probe. The driver previously did not validate negative card index values, which could lead to out-of-bounds access of internal arrays. This flaw was addressed by correcting and warning on invalid card index values.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ALSA portman2x4 driver in the Linux kernel lacked validation for negative card index values during device probing. Although the driver checked the devptr->id value, it did not verify if the id was negative, which can occur when the device is bound via sysfs with a 'none' or similar value. This omission could cause out-of-bounds (OOB) access to the index[] array and other parameters. The vulnerability was resolved by adding a sanity check to validate the card index and to warn or correct invalid values.
Potential Impact
This vulnerability could lead to out-of-bounds memory access within the ALSA portman2x4 driver, potentially causing system instability or crashes. No information is provided about exploitation in the wild or further impact such as privilege escalation or code execution.
Mitigation Recommendations
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.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-q972-jx45-qf27
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-80966"]
Threat ID: 6aa4a02c55bf5e2cf5a86b58
Added to database: 09/12/2026, 00:43:24 UTC
Last enriched: 09/12/2026, 01:23:26 UTC
Last updated: 09/12/2026, 03:01:28 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.