wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication

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The firmware-controlled rsp->count field is used as the loop bound for
indexing into the flexible rsp->regs[] array without validation against
the message length. A count exceeding the actual data causes out-of-
bounds reads from the heap-allocated message buffer.

Add a check that count fits within the received message.

Fixes: 43efa3c0f2 ("wcn36xx: Implement print_reg indication")
Signed-off-by: Tristan Madani <tristan@talencesecurity.com>
Reviewed-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
Link: https://patch.msgid.link/20260421135018.352774-3-tristmd@gmail.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

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Tristan Madani 2026-04-21 13:50:17 +00:00 • committed by Jeff Johnson

parent 88a240d86d

commit df2187acfc

1 changed files with 6 additions and 0 deletions

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drivers/net/wireless/ath/wcn36xx/smd.c

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