Bug 1227818 (CVE-2024-40964)

Summary: VUL-0: CVE-2024-40964: kernel: ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Kernel Bugs <kernel-bugs>
Status: REOPENED --- QA Contact: Security Team bot <security-team>
Severity: Normal    
Priority: P3 - Medium CC: gianluca.gabrielli
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/413891/
Whiteboard:
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-07-15 13:26:43 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()

The cs35l41_hda_unbind() function clears the hda_component entry
matching it's index and then dereferences the codec pointer held in the
first element of the hda_component array, this is an issue when the
device index was 0.

Instead use the codec pointer stashed in the cs35l41_hda structure as it
will still be valid.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-40964
https://www.cve.org/CVERecord?id=CVE-2024-40964
https://git.kernel.org/stable/c/19be722369c347f3af1c5848e303980ed040b819
https://git.kernel.org/stable/c/6386682cdc8b41319c92fbbe421953e33a28840c
https://git.kernel.org/stable/c/ff27bd8e17884f7cdefecb3f3817caadd6813dc0
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2024/CVE-2024-40964.mbox