CVE-2022-49291 (GCVE-0-2022-49291)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:56 – Updated: 2025-12-23 13:23
VLAI?
Title
ALSA: pcm: Fix races among concurrent hw_params and hw_free calls
Summary
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.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a42aa926843acca96c0dfbde2e835b8137f2f092 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fbeb492694ce0441053de57699e1e2b7bc148a69 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 33061d0fba51d2bf70a2ef9645f703c33fe8e438 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0090c13cbbdffd7da079ac56f80373a9a1be0bf8 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1bbf82d9f961414d6c76a08f7f843ea068e0ab7b (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 92ee3c60ec9fe64404dc035e7c41277d74aa26cb (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 4.14.279 , ≤ 4.14.* (semver)
Unaffected: 4.19.243 , ≤ 4.19.* (semver)
Unaffected: 5.4.193 , ≤ 5.4.* (semver)
Unaffected: 5.10.109 , ≤ 5.10.* (semver)
Unaffected: 5.15.32 , ≤ 5.15.* (semver)
Unaffected: 5.16.18 , ≤ 5.16.* (semver)
Unaffected: 5.17.1 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.