Medium [CVE-2026-80966] Out-of-bounds access in ALSA portman2x4 driver
This medium-severity Red Hat Linux advisory covers CVE-2026-80966.
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Summary
A flaw was found in the ALSA portman2x4 driver of the Linux kernel. This vulnerability occurs because the driver does not properly validate the card index, specifically failing to check for negative ID values.
A local attacker could exploit this by providing a negative ID value via sysfs, leading to an out-of-bounds memory access. This could potentially result in system instability or information disclosure.
Red Hat severity: Moderate — CVSS 5.8 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H). Weakness: CWE-125.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 55 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 55 minutes ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 55 minutes ago·verify at source
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