CVE - CVE-2022-49291

CVE-ID
CVE-2022-49291	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 URL:https://git.kernel.org/stable/c/0090c13cbbdffd7da079ac56f80373a9a1be0bf8 MISC:https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 URL:https://git.kernel.org/stable/c/0f6947f5f5208f6ebd4d76a82a4757e2839a23f8 MISC:https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b URL:https://git.kernel.org/stable/c/1bbf82d9f961414d6c76a08f7f843ea068e0ab7b MISC:https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 URL:https://git.kernel.org/stable/c/33061d0fba51d2bf70a2ef9645f703c33fe8e438 MISC:https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb URL:https://git.kernel.org/stable/c/92ee3c60ec9fe64404dc035e7c41277d74aa26cb MISC:https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 URL:https://git.kernel.org/stable/c/9cb6c40a6ebe4a0cfc9d6a181958211682cffea9 MISC:https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 URL:https://git.kernel.org/stable/c/a42aa926843acca96c0dfbde2e835b8137f2f092 MISC:https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69 URL:https://git.kernel.org/stable/c/fbeb492694ce0441053de57699e1e2b7bc148a69
Assigning CNA
kernel.org
Date Record Created
20250226	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20250226)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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