CVE-2026-98709None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: count only matching reservations in reserved switch ieee80211_vif_use_reserved_switch() validates a replacement by counting assigned links on ctx->repl…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
wifi: mac80211: count only matching reservations in reserved switch
ieee80211_vif_use_reserved_switch() validates a replacement by counting assigned links on ctx->replace_ctx and treating reservations too broadly. A link can still be assigned to the old channel context while holding a reservation that belongs to a different replacement operation.
That can make the current replacement appear complete too early. If another link finalizes first, the function can free the WILL_BE_REPLACED chanctx while the unmatched link and driver still use it, leading to a use-after-free in later beacon generation.
Require an in-place reservation to point at the current replacement context, and require the reserved and assigned contexts to be the matching replacement pair, before counting or moving the link.
Linux >= 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f < 4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41dLinux >= 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f < d31f655e44631891788ca67018ec5e1ed1c7de86Linux >= 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f < 03525b632908b049f4d04cc8a71cdff2329589cfLinux >= 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f < 5cc54a000960bc88f8c58940164dca0e601ab39cLinux >= 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f < 437f3727b4fd715266c296435c116288f82666fdLinux 3.17Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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