Medium [CVE-2026-80970] Linux kernel: Information disclosure in ALSA FCP subsystem
This medium-severity Red Hat Linux advisory covers CVE-2026-80970.
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Summary
A flaw was found in the Linux kernel's Advanced Linux Sound Architecture (ALSA) FireWire Control Protocol (FCP) subsystem. This vulnerability allows a local attacker to trigger the copying of uninitialized kernel memory to userspace.
By sending a specially crafted short or zero-length data stage during the FCP initialization, an attacker could potentially read sensitive information from the kernel's memory. Red Hat severity: Moderate — CVSS 4.5 (CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:H).
Weakness: CWE-908.
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 60 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 60 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 60 minutes ago·verify at source
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