CVE-2025-68729

Summary

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Fix MSDU buffer types handling in RX error path

Currently, packets received on the REO exception ring from unassociated peers are of MSDU buffer type, while the driver expects link descriptor type packets. These packets are not parsed further due to a return check on packet type in ath12k_hal_desc_reo_parse_err(), but the associated skb is not freed. This may lead to kernel crashes and buffer leaks.

Hence to fix, update the RX error handler to explicitly drop MSDU buffer type packets received on the REO exception ring. This prevents further processing of invalid packets and ensures stability in the RX error handling path.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < 5ff5a9d71cdc49c3400f30583a784ad0a17d01ecaffected
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < ab0554f51e5f2b9506e8a09e8accd02f00056729affected
LinuxLinuxd889913205cf7ebda905b1e62c5867ed4e39f6c2 < 36f9edbb9d0fc36c865c74f3c1ad8e1261ad3981affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.17.13 <= 6.17.*unaffected
LinuxLinux6.18.2 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References