Bug 2347885 (CVE-2022-49045) - CVE-2022-49045 kernel: ALSA: pcm: Test for "silence" field in struct "pcm_format_data"
Summary: CVE-2022-49045 kernel: ALSA: pcm: Test for "silence" field in struct "pcm_for...
Keywords:
Status: NEW
Alias: CVE-2022-49045
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 03:10 UTC by OSIDB Bzimport
Modified: 2025-05-16 05:59 UTC (History)
4 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2025-02-26 03:10:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: Test for "silence" field in struct "pcm_format_data"

Syzbot reports "KASAN: null-ptr-deref Write in
snd_pcm_format_set_silence".[1]

It is due to missing validation of the "silence" field of struct
"pcm_format_data" in "pcm_formats" array.

Add a test for valid "pat" and, if it is not so, return -EINVAL.

[1] https://lore.kernel.org/lkml/000000000000d188ef05dc2c7279@google.com/
Comment 1 Avinash Hanwate 2025-02-26 21:04:49 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022650-CVE-2022-49045-7d21@gregkh/T
Comment 4 TEJ RATHI 2025-05-16 05:59:04 UTC 
This CVE has been rejected upstream: https://lore.kernel.org/linux-cve-announce/2025030209-REJECTED-33ef@gregkh/
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