CVE-2025-39761: wifi: ath12k: Decrement TID on RX peer frag setup error handling
In the Linux kernel, the following vulnerability has been resolved:
wifi: ath12k: Decrement TID on RX peer frag setup error handling
Currently, TID is not decremented before peer cleanup, during error handling path of ath12kdprxpeerfragsetup(). This could lead to out-of-bounds access in peer->rxtid[].
Hence, add a decrement operation for TID, before peer cleanup to ensures proper cleanup and prevents out-of-bounds access issues when the RX peer frag setup fails.
Found during code review. Compile tested only.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-39761?
CVE-2025-39761 has been assigned a critical severity rating due to its potential to cause out-of-bounds memory access.
How do I fix CVE-2025-39761?
To fix CVE-2025-39761, update your Linux kernel to the latest version that includes the patch for this vulnerability.
What software versions are affected by CVE-2025-39761?
CVE-2025-39761 affects specific versions of the Linux kernel that utilize the ath12k driver for Wi-Fi.
Is CVE-2025-39761 a local or remote vulnerability?
CVE-2025-39761 can be exploited locally, affecting systems where the vulnerable Linux kernel is in use.
What systems are most at risk from CVE-2025-39761?
Systems using the Linux kernel with the ath12k driver configuration are at the highest risk from CVE-2025-39761.