CVE-2026-98704

wifi: mac80211: keep fallback association elements alive

CVE-2026-98704 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98704, released October 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
6.4
Moderate
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile

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]

Where it's fixed

ProductFixed inFixReleased
Linux
linux · Debian 13.5 (trixie) 6.12.113-1 DEBIAN-CVE-2026-98704 Oct 19, 2026
linux · Debian 14 7.2.10-1 DEBIAN-CVE-2026-98704 Oct 19, 2026
linux-6.12 · Debian 12.15 (bookworm) 6.12.113-1~deb12u1 DEBIAN-CVE-2026-98704 Oct 19, 2026

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