wifi: ath11k: Avoid buffer overread in ath11k_wmi_tlv_op_rx()

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Currently, in ath11k_wmi_tlv_op_rx(), the firmware buffer is read
without first verifying that the buffer has enough data to hold a
header. This could result in a buffer overread.

Add an upfront length check before dereferencing skb->data as a
wmi_cmd_hdr. The check is placed before the trace_ath11k_wmi_event()
call to preserve the existing trace semantics (tracing the full raw
WMI event including the header), unlike the analogous ath12k fix which
could use skb_pull_data() directly.

Compile tested only.

Fixes: d5c65159f2 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
Assisted-by: Claude:claude-sonnet-4-6
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Link: https://patch.msgid.link/20260716-ath11k_wmi_tlv_op_rx-overread-v1-1-0b972b3f1368@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

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This commit is contained in:

Jeff Johnson 2026-07-16 13:01:31 -07:00

parent 7698656a2f

commit 9ef9dd3005

1 changed files with 4 additions and 2 deletions

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drivers/net/wireless/ath/ath11k/wmi.c

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