{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2024-40912", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2024-40912", "idYear": 2024, "status": "PUBLISHED", "publishedAt": "2024-07-12T12:20:50.488Z", "updatedAt": "2026-10-15T00:45:08.725Z", "importedAt": "2026-10-24T01:57:16.009Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "wifi: mac80211: Fix deadlock in ieee80211_sta_ps_deliver_wakeup()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: Fix deadlock in ieee80211_sta_ps_deliver_wakeup()\n\nThe ieee80211_sta_ps_deliver_wakeup() function takes sta->ps_lock to\nsynchronizes with ieee80211_tx_h_unicast_ps_buf() which is called from\nsoftirq context. However using only spin_lock() to get sta->ps_lock in\nieee80211_sta_ps_deliver_wakeup() does not prevent softirq to execute\non this same CPU, to run ieee80211_tx_h_unicast_ps_buf() and try to\ntake this same lock ending in deadlock. Below is an example of rcu stall\nthat arises in such situation.\n\n rcu: INFO: rcu_sched self-detected stall on CPU\n rcu: 2-....: (42413413 ticks this GP) idle=b154/1/0x4000000000000000 softirq=1763/1765 fqs=21206996\n rcu: (t=42586894 jiffies g=2057 q=362405 ncpus=4)\n CPU: 2 PID: 719 Comm: wpa_supplicant Tainted: G W 6.4.0-02158-g1b062f552873 #742\n Hardware name: RPT (r1) (DT)\n pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : queued_spin_lock_slowpath+0x58/0x2d0\n lr : invoke_tx_handlers_early+0x5b4/0x5c0\n sp : ffff00001ef64660\n x29: ffff00001ef64660 x28: ffff000009bc1070 x27: ffff000009bc0ad8\n x26: ffff000009bc0900 x25: ffff00001ef647a8 x24: 0000000000000000\n x23: ffff000009bc0900 x22: ffff000009bc0900 x21: ffff00000ac0e000\n x20: ffff00000a279e00 x19: ffff00001ef646e8 x18: 0000000000000000\n x17: ffff800016468000 x16: ffff00001ef608c0 x15: 0010533c93f64f80\n x14: 0010395c9faa3946 x13: 0000000000000000 x12: 00000000fa83b2da\n x11: 000000012edeceea x10: ffff0000010fbe00 x9 : 0000000000895440\n x8 : 000000000010533c x7 : ffff00000ad8b740 x6 : ffff00000c350880\n x5 : 0000000000000007 x4 : 0000000000000001 x3 : 0000000000000000\n x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffff00000ac0e0e8\n Call trace:\n queued_spin_lock_slowpath+0x58/0x2d0\n ieee80211_tx+0x80/0x12c\n ieee80211_tx_pending+0x110/0x278\n tasklet_action_common.constprop.0+0x10c/0x144\n tasklet_action+0x20/0x28\n _stext+0x11c/0x284\n ____do_softirq+0xc/0x14\n call_on_irq_stack+0x24/0x34\n do_softirq_own_stack+0x18/0x20\n do_softirq+0x74/0x7c\n __local_bh_enable_ip+0xa0/0xa4\n _ieee80211_wake_txqs+0x3b0/0x4b8\n __ieee80211_wake_queue+0x12c/0x168\n ieee80211_add_pending_skbs+0xec/0x138\n ieee80211_sta_ps_deliver_wakeup+0x2a4/0x480\n ieee80211_mps_sta_status_update.part.0+0xd8/0x11c\n ieee80211_mps_sta_status_update+0x18/0x24\n sta_apply_parameters+0x3bc/0x4c0\n ieee80211_change_station+0x1b8/0x2dc\n nl80211_set_station+0x444/0x49c\n genl_family_rcv_msg_doit.isra.0+0xa4/0xfc\n genl_rcv_msg+0x1b0/0x244\n netlink_rcv_skb+0x38/0x10c\n genl_rcv+0x34/0x48\n netlink_unicast+0x254/0x2bc\n netlink_sendmsg+0x190/0x3b4\n ____sys_sendmsg+0x1e8/0x218\n ___sys_sendmsg+0x68/0x8c\n __sys_sendmsg+0x44/0x84\n __arm64_sys_sendmsg+0x20/0x28\n do_el0_svc+0x6c/0xe8\n el0_svc+0x14/0x48\n el0t_64_sync_handler+0xb0/0xb4\n el0t_64_sync+0x14c/0x150\n\nUsing spin_lock_bh()/spin_unlock_bh() instead prevents softirq to raise\non the same CPU that is holding the lock.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "e51637e0c66a6f72d134d9f95daa47ea62b43c7e" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "28ba44d680a30c51cf485a2f5a3b680e66ed3932" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "e7e916d693dcb5a297f40312600a82475f2e63bc" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "d90bdff79f8e40adf889b5408bfcf521528b169f" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "9c49b58b9a2bed707e7638576e54c4bccd97b9eb" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "456bbb8a31e425177dc0e8d4f98728a560c20e81" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "47d176755d5c0baf284eff039560f8c1ba0ea485" }, { "version": "1d147bfa64293b2723c4fec50922168658e613ba", "status": "affected", "versionType": "git", "lessThan": "44c06bbde6443de206b30f513100b5670b23fc5e" }, { "version": "ad64b463d919a18be70b281efb135231169caf4a", "status": "affected", "versionType": "git" }, { "version": "46a5a5493360f995b834eb3b828eb59da4604509", "status": "affected", "versionType": "git" }, { "version": "a7ee1a84a81555b19ec3d02f104bfd70cf0b668a", "status": "affected", "versionType": "git" }, { "version": "58d4310586466840dab77e56e53f4508853a5268", "status": "affected", "versionType": "git" }, { "version": "fcb6d3c79824d350893edfa7b50d6ba1f670c4ec", "status": "affected", "versionType": "git" }, { "version": "3.2.56", "status": "affected", "versionType": "semver", "lessThan": "3.3" }, { "version": "3.4.84", "status": "affected", "versionType": "semver", "lessThan": "3.5" }, { "version": "3.10.34", "status": "affected", "versionType": "semver", "lessThan": "3.11" }, { "version": "3.12.15", "status": "affected", "versionType": "semver", "lessThan": "3.13" }, { "version": "3.13.7", "status": "affected", "versionType": "semver", "lessThan": "3.14" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "3.14", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "3.14" }, { "version": "4.19.317", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.279", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.221", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.162", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.95", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.6.35", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.6.*" }, { "version": "6.9.6", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.9.*" }, { "version": "6.10", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }