[lvc-project] [PATCH] wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()

[Rameshkumar Sundaram]

On 5/30/2026 5:12 PM, Dmitry Morgun wrote:
> When the first entry in msdu_details has a zero buffer address,
> the code accesses msdu_details[i - 1] with i == 0, causing a
> buffer underflow.
> 
> Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding
> a separate check for i == 0 before the main condition to prevent
> the out-of-bounds access.
> 
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
> 
> Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
> Signed-off-by: Dmitry Morgun <d.morgun at ispras.ru>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram at oss.qualcomm.com>