{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"0d2619e708e2ef02ba1c91642ea261d3f19d8f9a","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"659a81b62a61440b85e02c09903be861ae7679e5","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"aa01ef0ebbc3289154229ef58e65baf289eb9789","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"962f755a47d7ec3bbf6c709697d7f4c5f798441d","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"a424985c3ef2a87ce6057a853e18d0c441a86be8","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"4b8abf43bf34791c99d99dc3be13f897adefc461","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"},{"lessThan":"f3858d5b1432098c1936e03d6e03dd0e33facf60","status":"affected","version":"397a7a24ef8c2967a3e8090013f9c54714110c48","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.9"},{"lessThan":"3.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.265","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.216","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.183","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-68405","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock\n\nieee80211_do_stop() removes AP_VLAN packets from the parent AP\nps->bc_buf while holding ps->bc_buf.lock with IRQs disabled. It then\ncalls ieee80211_free_txskb() before dropping the lock.\n\nieee80211_free_txskb() is not just a passive SKB release. For SKBs with\nTX status state it can report a dropped frame through cfg80211/nl80211,\nand that path can reach netlink tap transmit. This is the same reason\nthe pending queue cleanup in ieee80211_do_stop() already unlinks SKBs\nunder the queue lock and frees them after IRQ state is restored.\n\nThe buggy scenario involves two paths, with each column showing the\norder within that path:\n\nAP_VLAN management TX:             AP_VLAN stop:\n1. attach ACK-status state         1. clear the running state\n2. queue a multicast SKB on        2. take ps->bc_buf.lock with IRQs\n   parent ps->bc_buf                  disabled\n                                   3. unlink the AP_VLAN SKB\n                                   4. call ieee80211_free_txskb()\n\nUnlink matching AP_VLAN SKBs from ps->bc_buf under the existing lock,\nbut move them to a local free queue. Drop the lock and restore IRQ state\nbefore calling ieee80211_free_txskb().\n\nWARNING: kernel/softirq.c:430 at __local_bh_enable_ip","epss":{"date":"2026-11-06","percentile":0.12608,"score":0.0022},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793985571763,"publishedAt":1786363465241,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/0d2619e708e2ef02ba1c91642ea261d3f19d8f9a"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/659a81b62a61440b85e02c09903be861ae7679e5"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/aa01ef0ebbc3289154229ef58e65baf289eb9789"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/962f755a47d7ec3bbf6c709697d7f4c5f798441d"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/a424985c3ef2a87ce6057a853e18d0c441a86be8"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4b8abf43bf34791c99d99dc3be13f897adefc461"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/f3858d5b1432098c1936e03d6e03dd0e33facf60"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/0d2619e708e2ef02ba1c91642ea261d3f19d8f9a"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/4b8abf43bf34791c99d99dc3be13f897adefc461"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/659a81b62a61440b85e02c09903be861ae7679e5"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/962f755a47d7ec3bbf6c709697d7f4c5f798441d"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/a424985c3ef2a87ce6057a853e18d0c441a86be8"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/aa01ef0ebbc3289154229ef58e65baf289eb9789"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/be9dfcb0654c1f6c0fce7ba2a909683bb6f1e0ef"},{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"url":"https://git.kernel.org/stable/c/f3858d5b1432098c1936e03d6e03dd0e33facf60"}],"remediation":[],"revision":"a50bb016d739388767b0b39efbff10da0e620a17bb91264f37c0f6ae32438a26","sources":[{"modifiedAt":1793984115546,"name":"CNA: Linux","retrievedAt":1793985990886,"url":"https://www.cve.org/CVERecord?id=CVE-2026-68405"},{"modifiedAt":1793985571763,"name":"NVD","retrievedAt":1793989641326,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68405"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793985992024,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-68405"}],"ssvc":{"assessedAt":1793983723826,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"wifi: mac80211: free AP_VLAN bc_buf SKBs outside IRQ lock","updatedAt":1793989641326}