{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98709","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.365Z","datePublished":"2026-10-18T15:46:39.290Z","dateUpdated":"2026-10-30T12:39:00.231Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:39:00.231Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/chan.c"],"versions":[{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"4c4671a706d2d85442a30850abfada5377ffbbc8","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"183cc72ae9467717afba8b8d194a558a6666cb53","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"b3d9f582f98e06070d5233b177b2899b693a01ec","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41d","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"d31f655e44631891788ca67018ec5e1ed1c7de86","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"03525b632908b049f4d04cc8a71cdff2329589cf","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"5cc54a000960bc88f8c58940164dca0e601ab39c","status":"affected","versionType":"git"},{"version":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f","lessThan":"437f3727b4fd715266c296435c116288f82666fd","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/chan.c"],"versions":[{"version":"3.17","status":"affected"},{"version":"0","lessThan":"3.17","status":"unaffected","versionType":"semver"},{"version":"5.10.273","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.17","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4c4671a706d2d85442a30850abfada5377ffbbc8"},{"url":"https://git.kernel.org/stable/c/183cc72ae9467717afba8b8d194a558a6666cb53"},{"url":"https://git.kernel.org/stable/c/b3d9f582f98e06070d5233b177b2899b693a01ec"},{"url":"https://git.kernel.org/stable/c/4ae6ed5b6074df5f3da05fd74c40bb24c5c9b41d"},{"url":"https://git.kernel.org/stable/c/d31f655e44631891788ca67018ec5e1ed1c7de86"},{"url":"https://git.kernel.org/stable/c/03525b632908b049f4d04cc8a71cdff2329589cf"},{"url":"https://git.kernel.org/stable/c/5cc54a000960bc88f8c58940164dca0e601ab39c"},{"url":"https://git.kernel.org/stable/c/437f3727b4fd715266c296435c116288f82666fd"}],"title":"wifi: mac80211: count only matching reservations in reserved switch","x_generator":{"engine":"bippy-1.2.0"}}}}