{"id":"CVE-2026-98709","published":"2026-10-18T16:17:24.437","lastModified":"2026-10-19T10:19:35.190","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: count only matching reservations in reserved switch\n\nieee80211_vif_use_reserved_switch() validates a replacement by counting\nassigned links on ctx->replace_ctx and treating reservations too\nbroadly. A link can still be assigned to the old channel context while\nholding a reservation that belongs to a different replacement\noperation.\n\nThat can make the current replacement appear complete too early. If\nanother link finalizes first, the function can free the\nWILL_BE_REPLACED chanctx while the unmatched link and driver still use\nit, leading to a use-after-free in later beacon generation.\n\nRequire an in-place reservation to point at the current replacement\ncontext, and require the reserved and assigned contexts to be the\nmatching replacement pair, before counting or moving the link.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/03525b632908b049f4d04cc8a71cdff2329589cf","tags":[]},{"url":"https://git.kernel.org/stable/c/437f3727b4fd715266c296435c116288f82666fd","tags":[]},{"url":"https://git.kernel.org/stable/c/5cc54a000960bc88f8c58940164dca0e601ab39c","tags":[]},{"url":"https://git.kernel.org/stable/c/d31f655e44631891788ca67018ec5e1ed1c7de86","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}