CVE-2026-68414
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel sched scan results work on unregister cfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a driver result notification while a scheduled scan request is present. The work callback recovers the containing cfg80211_registered_device and then locks the wiphy and walks the scheduled-scan request list. wiphy_unregister() already makes the wiphy unreachable and drains rdev work items before cfg80211_dev_free() can release the object, but it does not drain sched_scan_res_wk. A queued or running result work item can therefore cross the unregister/free boundary and access freed rdev state. The buggy scenario involves two paths, with each column showing the order within that path: scheduled-scan result path: unregister/free path: 1. cfg80211_sched_scan_results() 1. interface teardown stops and queues rdev->sched_scan_res_wk. removes the scheduled scan request. 2. cfg80211_wq starts the work 2. wiphy_unregister() drains other item and recovers rdev. rdev work items. 3. The worker locks rdev->wiphy 3. cfg80211_dev_free() destroys and and walks rdev state. frees rdev. Cancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev work items. cancel_work_sync() removes a pending result notification and waits for an already running callback, so cfg80211_dev_free() cannot free rdev while this work item is still active. Validation reproduced this kernel report: BUG: KASAN: use-after-free in cfg80211_sched_scan_results_wk+0x4a6/0x530 Workqueue: cfg80211 cfg80211_sched_scan_results_wk [cfg80211] Read of size 8 Call trace: dump_stack_lvl+0x66/0xa0 print_report+0xce/0x630 cfg80211_sched_scan_results_wk+0x4a6/0x530 srso_alias_return_thunk+0x5/0xfbef5 __virt_addr_valid+0x224/0x430 kasan_report+0xac/0xe0 lockdep_hardirqs_on_prepare+0xea/0x1a0 process_one_work+0x8d0/0x18f0 (kernel/workqueue.c:3212) lock_is_held_type+0x8f/0x100 worker_thread+0x5ad/0xfd0 __kthread_parkme+0xc6/0x200 kthread+0x31e/0x410 trace_hardirqs_on+0x1a/0x170 ret_from_fork+0x576/0x810 __switch_to+0x57e/0xe20 __switch_to_asm+0x33/0x70 ret_from_fork_asm+0x1a/0x30
View original CVE JSON
{
"id": "CVE-2026-68414",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-08-10T13:20:35.117",
"lastModified": "2026-10-19T22:17:18.033",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
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"lessThan": "c0fa1f3a4b021a5c6373169fd6c9bb4261d676a0",
"versionType": "git",
"status": "affected"
},
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"status": "affected"
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{
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"status": "affected"
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{
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"versionType": "git",
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{
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"lessThan": "9293574ac208d18c11073538851fb69355beb3b5",
"versionType": "git",
"status": "affected"
},
{
"version": "807f8a8c300435d5483e8d78df9dcdbc27333166",
"lessThan": "b119c70b24776c8ab2a2c0515397b3b0ad4e66cd",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "edf0730be33696a1bd142792830d392129e495cc",
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},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"net/wireless/core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "3.0",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.0",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.216",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.183",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.148",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.101",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.42",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1.6",
"lessThanOrEqual": "7.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.6,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-16T15:48:28.206638Z",
"id": "CVE-2026-68414",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/308ffdf575560d7e7b8b21f1e3ca6276630f73bf",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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"url": "https://git.kernel.org/stable/c/3368457b4871ae8f0f88d19c9a3e6270e850ede6",
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{
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}