Answer in brief
CVE-2022-49291 records a High severity (CVSS 7.8) vulnerability in ALSA: pcm: Fix races among concurrent hw_params and hw_free calls. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 2.6.12 | Not reported |
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a42aa926843acca96c0dfbde2e835b8137f2f092 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fbeb492694ce0441053de57699e1e2b7bc148a69 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <33061d0fba51d2bf70a2ef9645f703c33fe8e438 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0090c13cbbdffd7da079ac56f80373a9a1be0bf8 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1bbf82d9f961414d6c76a08f7f843ea068e0ab7b || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <92ee3c60ec9fe64404dc035e7c41277d74aa26cb | a42aa926843acca96c0dfbde2e835b8137f2f092, 9cb6c40a6ebe4a0cfc9d6a181958211682cffea9, fbeb492694ce0441053de57699e1e2b7bc148a69, 0f6947f5f5208f6ebd4d76a82a4757e2839a23f8, 33061d0fba51d2bf70a2ef9645f703c33fe8e438, 0090c13cbbdffd7da079ac56f80373a9a1be0bf8, 1bbf82d9f961414d6c76a08f7f843ea068e0ab7b, 92ee3c60ec9fe64404dc035e7c41277d74aa26cb |
Published upstream
Feb 26, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Fix races among concurrent hw_params and hw_free calls Currently we have neither proper check nor protection against the concurrent calls of PCM hw_params and hw_free ioctls, which may result in a UAF. Since the existing PCM stream lock can't be used for protecting the whole ioctl operations, we need a new mutex to protect those racy calls. This patch introduced a new mutex, runtime->buffer_mutex, and applies it to both hw_params and hw_free ioctl code paths. Along with it, the both functions are slightly modified (the mmap_count check is moved into the state-check block) for code simplicity.
Quoted source text, attributed separately from HOL analysis.