5.9

CVE-2023-52776

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

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.3 < 6.5.13
Linux ≫ Linux Kernel Version >= 6.6 < 6.6.3
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.71% 0.485
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7
Patch
https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535
Patch
https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e
Patch