Bug 2347969 (CVE-2022-49498)

Summary: CVE-2022-49498 kernel: ALSA: pcm: Check for null pointer of pointer substream before dereferencing it
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:13:03 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: pcm: Check for null pointer of pointer substream before dereferencing it

Pointer substream is being dereferenced on the assignment of pointer card
before substream is being null checked with the macro PCM_RUNTIME_CHECK.
Although PCM_RUNTIME_CHECK calls BUG_ON, it still is useful to perform the
the pointer check before card is assigned.
Comment 1 Avinash Hanwate 2025-02-26 11:54:14 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022607-CVE-2022-49498-dd18@gregkh/T
Comment 3 Avinash Hanwate 2025-02-26 16:21:12 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022607-CVE-2022-49498-dd18@gregkh/T