wifi: mac80211: Fix overread in PREQ frame processing

Browse source

When the AF flag is enabled, hwmp_preq_frame_process() overreads
target_addr by 2 bytes. Since this occurs within the socket buffer, it does
not read across memory boundaries and therefore poses no security risk;
however, we will fix it as a precaution.

In this fix, a new function mesh_path_parse_request_frame() is established
to separate the implementation of frame format validation and the check for
unsupported features. This is intended to facilitate future work when
implementing the currently unsupported parts.

Assisted-by: Claude:Sonnet 4.6
Signed-off-by: Masashi Honma <masashi.honma@gmail.com>
Link: https://patch.msgid.link/20260529230952.124754-4-masashi.honma@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

...

This commit is contained in:

Masashi Honma 2026-05-30 08:09:46 +09:00 • committed by Johannes Berg

parent 68511e1632

commit 8b40b1d24a

3 changed files with 46 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

29

include/linux/ieee80211-mesh.h

View file

12

net/mac80211/mesh_hwmp.c

View file

9

net/mac80211/parse.c

View file