Bug 2347877 (CVE-2022-49288) - CVE-2022-49288 kernel: ALSA: pcm: Fix races among concurrent prealloc proc writes
Summary: CVE-2022-49288 kernel: ALSA: pcm: Fix races among concurrent prealloc proc wr...
Keywords:
Status: NEW
Alias: CVE-2022-49288
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-02-26 03:09 UTC by OSIDB Bzimport
Modified: 2025-03-11 11:10 UTC (History)
4 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-02-26 03:09:53 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: Fix races among concurrent prealloc proc writes

We have no protection against concurrent PCM buffer preallocation
changes via proc files, and it may potentially lead to UAF or some
weird problem.  This patch applies the PCM open_mutex to the proc
write operation for avoiding the racy proc writes and the PCM stream
open (and further operations).
Comment 1 Avinash Hanwate 2025-02-27 07:57:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022633-CVE-2022-49288-d3cb@gregkh/T
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