[PATCH ath-next v2 0/2] wifi: ath11k/ath12k: bound READY MAC address array reads

[John Macias via B4 Relay]

ath11k_wmi_tlv_rdy_parse() and ath12k_wmi_rdy_parse() copy one MAC
address per radio from the READY event's fixed-struct array after
checking only the count advertised in the fixed record, not the array
TLV length. A firmware READY event with a short array makes the copy
read past the end of the TLV value.

These patches check the array length first and fall back to the
driver's default per-radio addresses when it is too short.

Found while bringing up an IPQ8074 v1 device with older firmware; the
issue is not specific to that hardware. Verified with a userspace harness
around the unmodified parsers under AddressSanitizer. Compile tested
on ath-next (W=1). The ath11k change has also run on an IPQ8074 hw1.0
board on every boot since 16 Oct; its firmware sends a well-formed
array, so that covers the normal path only. The ath12k change is
compile tested only. Neither has been tested on hardware with a
malformed event.

Jeff, following your pointers on my earlier ath12k RX-ring RFC, these
carry a full-name sign-off, an Assisted-by tag, and state the testing
explicitly. This work was developed with AI assistance.

---
Changes in v2:
- Drop RFC.
- ath11k: note the hardware run and add a Tested-on tag; no code change.
- v1 was accidentally sent twice; apologies for the duplicate.
- Link to v1: https://patch.msgid.link/20261015-rdy-mac-array-bounds-v1-0-5de276b752a3@gmail.com

---
John Macias (2):
      wifi: ath11k: bound READY MAC address array reads
      wifi: ath12k: bound READY MAC address array reads

 drivers/net/wireless/ath/ath11k/wmi.c | 6 ++++++
 drivers/net/wireless/ath/ath12k/wmi.c | 6 ++++++
 2 files changed, 12 insertions(+)
---
base-commit: cd026e68fdbf88b9cc522b76c7a9d92c9a41f709
change-id: 20261015-rdy-mac-array-bounds-de70c7750217

Best regards,
--  
John Macias <dencity7 at gmail.com>