CVEvulnerability
CVE-2026-98704
- Status
- Received
- Published
- 2026-10-18
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: keep fallback association elements alive
Associating to a non-transmitted MBSSID profile reads freed memory while
determining the operating channel and applying HT capabilities.
When an association response omits WMM, HT, or VHT information,
ieee80211_assoc_config_link() parses the cached BSS IEs and copies the
missing element pointers out of that fallback parse. For a
non-transmitted MBSSID profile those pointers refer to merged-profile
storage owned by the parse object, and the fallback block frees that
object at its end. The copied pointers are used afterwards to determine
the operating channel, configure bandwidth, and apply HT capabilities.
Keep the fallback parse result alive until association setup finishes.
[reorder variable declaration]
References
- https://git.kernel.org/stable/c/0878594c5806dd29fa5e16cc026ce19158afdad2 git.kernel.org
- https://git.kernel.org/stable/c/1d9644753d46c86b4e5c05bd6d9d35339ea27331 git.kernel.org
- https://git.kernel.org/stable/c/a10a2f80476d166fd81c361ec0319493671b694e git.kernel.org
- https://git.kernel.org/stable/c/d0183cd1f6a2dba9e63be20af2f65093c9c8d121 git.kernel.org
- https://git.kernel.org/stable/c/de77b0f68142147e74fac1c497dbe1f93daeeed9 git.kernel.org