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 ath12kmacgetarbypdevid() 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2023-52776?
CVE-2023-52776 has been classified with a severity level that indicates it could potentially impact the stability of the Linux kernel's wifi functionality.
How do I fix CVE-2023-52776?
To resolve CVE-2023-52776, update your Linux kernel to versions above 6.5.13 or 6.6.3.
Which versions of the Linux kernel are affected by CVE-2023-52776?
CVE-2023-52776 affects Linux kernel versions 6.3 up to 6.5.13 and 6.6 up to 6.6.3.
What components are involved in CVE-2023-52776?
CVE-2023-52776 involves the ath12k driver within the Linux kernel.
Is CVE-2023-52776 a critical vulnerability?
CVE-2023-52776 is considered a significant vulnerability due to its implications for wifi event handling in the Linux kernel.