{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98340","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.342Z","datePublished":"2026-10-06T08:46:30.796Z","dateUpdated":"2026-10-06T08:46:30.796Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-06T08:46:30.796Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: only group hidden BSSes with beacon entries\n\nWhen a probe response for an unknown BSS comes in, __cfg80211_bss_update()\nlooks for an existing entry with the same BSSID and a hidden (zero-length\nor NUL-filled) SSID, and if it finds one it groups them, using the beacon\nIEs from the existing entry.\n\nBut that could find another entry without a beacon, if it was also from a\nprobe response (with SSID), so there's a group without beacon elements.\n\nIf a beacon with a hidden SSID for that BSSID arrives later,\ncfg80211_combine_bsses() goes looking for the probe response entries that\nbelong to it - i.e. entries with the same BSSID and channel that have no\nbeacon IEs - and finds those two. They are already grouped with each\nother, so it hits its\n\n  WARN_ON_ONCE(bss->pub.hidden_beacon_bss)\n  WARN_ON_ONCE(!list_empty(&bss->hidden_list))\n\nwhich are there because an entry without beacon elements is not supposed\nto be part of a group yet.\n\nOnly combine entries when a beacon was already received, ones that are\nkept separate will be combined when a beacon arrives."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/wireless/scan.c"],"versions":[{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"4cd6a518ce7527284bbc9baab5fa2453a7d477c2","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"74ed0d992f392c75e1969415527e06df3f7a4034","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"3658093df69849daf4f813a8f087f358e13be203","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"73365b81630b57e1a1f9d50dc87281797855c2ac","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"7405dd19bda4537a2843637d8d7bed1efd4776cf","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"86235be788094131912e9bd8412b358d91d99f49","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"332ea1502c46f53375cb109fa82bfaff818f3a41","status":"affected","versionType":"git"},{"version":"4593c4cbe1c96b3995727dc42f6aa103f4ff5afc","lessThan":"068843ed0902c552a13860c5ec6b2ca65b57a065","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/wireless/scan.c"],"versions":[{"version":"3.9","status":"affected"},{"version":"0","lessThan":"3.9","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc4","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":"3.9","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.3-rc4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/4cd6a518ce7527284bbc9baab5fa2453a7d477c2"},{"url":"https://git.kernel.org/stable/c/74ed0d992f392c75e1969415527e06df3f7a4034"},{"url":"https://git.kernel.org/stable/c/3658093df69849daf4f813a8f087f358e13be203"},{"url":"https://git.kernel.org/stable/c/73365b81630b57e1a1f9d50dc87281797855c2ac"},{"url":"https://git.kernel.org/stable/c/7405dd19bda4537a2843637d8d7bed1efd4776cf"},{"url":"https://git.kernel.org/stable/c/86235be788094131912e9bd8412b358d91d99f49"},{"url":"https://git.kernel.org/stable/c/332ea1502c46f53375cb109fa82bfaff818f3a41"},{"url":"https://git.kernel.org/stable/c/068843ed0902c552a13860c5ec6b2ca65b57a065"}],"title":"wifi: cfg80211: only group hidden BSSes with beacon entries","x_generator":{"engine":"bippy-1.2.0"}}}}