{"id":"CVE-2026-68414","revision":"7f8eb3ea6b27411e9d0f5b64a23cbcf3","records":[{"revision":"7f8eb3ea6b27411e9d0f5b64a23cbcf3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68414","aliases":[],"title":"wifi: cfg80211: cancel sched scan results work on unregister","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: cancel sched scan results work on unregister\n\ncfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a\ndriver result notification while a scheduled scan request is present. The\nwork callback recovers the containing cfg80211_registered_device and then\nlocks the wiphy and walks the scheduled-scan request list.\n\nwiphy_unregister() already makes the wiphy unreachable and drains rdev work\nitems before cfg80211_dev_free() can release the object, but it does not\ndrain sched_scan_res_wk. A queued or running result work item can therefore\ncross the unregister/free boundary and access freed rdev state.\n\nThe buggy scenario involves two paths, with each column showing the order\nwithin that path:\n\nscheduled-scan result path:        unregister/free path:\n1. cfg80211_sched_scan_results()   1. interface teardown stops and\n   queues rdev->sched_scan_res_wk.    removes the scheduled scan request.\n2. cfg80211_wq starts the work     2. wiphy_unregister() drains other\n   item and recovers rdev.            rdev work items.\n3. The worker locks rdev->wiphy    3. cfg80211_dev_free() destroys and\n   and walks rdev state.              frees rdev.\n\nCancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev\nwork items. cancel_work_sync() removes a pending result notification and\nwaits for an already running callback, so cfg80211_dev_free() cannot free\nrdev while this work item is still active.\n\nValidation reproduced this kernel report:\nBUG: KASAN: use-after-free in cfg80211_sched_scan_results_wk+0x4a6/0x530\nWorkqueue: cfg80211 cfg80211_sched_scan_results_wk [cfg80211]\nRead of size 8\nCall trace:\n  dump_stack_lvl+0x66/0xa0\n  print_report+0xce/0x630\n  cfg80211_sched_scan_results_wk+0x4a6/0x530\n  srso_alias_return_thunk+0x5/0xfbef5\n  __virt_addr_valid+0x224/0x430\n  kasan_report+0xac/0xe0\n  lockdep_hardirqs_on_prepare+0xea/0x1a0\n  process_one_work+0x8d0/0x18f0 (kernel/workqueue.c:3212)\n  lock_is_held_type+0x8f/0x100\n  worker_thread+0x5ad/0xfd0\n  __kthread_parkme+0xc6/0x200\n  kthread+0x31e/0x410\n  trace_hardirqs_on+0x1a/0x170\n  ret_from_fork+0x576/0x810\n  __switch_to+0x57e/0xe20\n  __switch_to_asm+0x33/0x70\n  ret_from_fork_asm+0x1a/0x30","state":0,"publishedAt":"2026-08-10T12:04:34.459+00:00","modifiedAt":"2026-10-19T21:09:09.201+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/wireless/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"c0fa1f3a4b021a5c6373169fd6c9bb4261d676a0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"b51b42b974461fd0f688baad85f10e2b8ab215c5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"3368457b4871ae8f0f88d19c9a3e6270e850ede6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"308ffdf575560d7e7b8b21f1e3ca6276630f73bf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"9293574ac208d18c11073538851fb69355beb3b5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"b119c70b24776c8ab2a2c0515397b3b0ad4e66cd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"807f8a8c300435d5483e8d78df9dcdbc27333166\",\n                            \"lessThan\": \"edf0730be33696a1bd142792830d392129e495cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"net/wireless/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/c0fa1f3a4b021a5c6373169fd6c9bb4261d676a0","https://git.kernel.org/stable/c/b51b42b974461fd0f688baad85f10e2b8ab215c5","https://git.kernel.org/stable/c/3368457b4871ae8f0f88d19c9a3e6270e850ede6","https://git.kernel.org/stable/c/308ffdf575560d7e7b8b21f1e3ca6276630f73bf","https://git.kernel.org/stable/c/9293574ac208d18c11073538851fb69355beb3b5","https://git.kernel.org/stable/c/b119c70b24776c8ab2a2c0515397b3b0ad4e66cd","https://git.kernel.org/stable/c/edf0730be33696a1bd142792830d392129e495cc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68414","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68414","identifiers":["CVE-2026-68414"]},"retained":false,"historicalAffected":[]}],"coverage":[]}