Bug 2324420 (CVE-2024-50160)

Summary: CVE-2024-50160 kernel: ALSA: hda/cs8409: Fix possible NULL dereference
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Bug Depends On: 2324455    
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Description OSIDB Bzimport 2024-11-07 17:01:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda/cs8409: Fix possible NULL dereference

If snd_hda_gen_add_kctl fails to allocate memory and returns NULL, then
NULL pointer dereference will occur in the next line.

Since dolphin_fixups function is a hda_fixup function which is not supposed
to return any errors, add simple check before dereference, ignore the fail.

Found by Linux Verification Center (linuxtesting.org) with SVACE.
Comment 1 Robb Gatica 2024-11-07 19:41:19 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024110747-CVE-2024-50160-d61e@gregkh/T