CVE-2024-43847 wifi: ath12k: fix invalid memory access while processing fragmented packets

2024-08-1709:22:01

Linux

github.com

linux kernel

vulnerability

fix

wifi

ath12k

memory access

fragmented packets

ring mask index

interrupt

monitor support

AI Score

6.9

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

wifi: ath12k: fix invalid memory access while processing fragmented packets

The monitor ring and the reo reinject ring share the same ring mask index.
When the driver receives an interrupt for the reo reinject ring, the
monitor ring is also processed, leading to invalid memory access. Since
monitor support is not yet enabled in ath12k, the ring mask for the monitor
ring should be removed.

Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00209-QCAHKSWPL_SILICONZ-1