Bug 1225090 (CVE-2023-52776) - VUL-0: CVE-2023-52776: kernel: wifi: ath12k: fix dfs-radar and temperature event locking
Summary: VUL-0: CVE-2023-52776: kernel: wifi: ath12k: fix dfs-radar and temperature ev...
Status: RESOLVED FIXED
Alias: CVE-2023-52776
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/407203/
Whiteboard: CVSSv3.1:SUSE:CVE-2023-52776:5.9:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2024-05-23 08:52 UTC by SMASH SMASH
Modified: 2024-07-08 15:02 UTC (History)
2 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description SMASH SMASH 2024-05-23 08:52:33 UTC 
In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: fix dfs-radar and temperature event locking

The ath12k active pdevs are protected by RCU but the DFS-radar and
temperature event handling code calling ath12k_mac_get_ar_by_pdev_id()
was not marked as a read-side critical section.

Mark the code in question as RCU read-side critical sections to avoid
any potential use-after-free issues.

Note that the temperature event handler looks like a place holder
currently but would still trigger an RCU lockdep splat.

Compile tested only.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-52776
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2023/CVE-2023-52776.mbox
https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535
https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e
https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7
https://www.cve.org/CVERecord?id=CVE-2023-52776
Comment 2 Andrea Mattiazzo 2024-05-29 12:31:33 UTC 
All done, closing.