252 lines
13 KiB
JSON
252 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-68408",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-30T09:28:09.390Z",
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"datePublished": "2026-08-10T12:04:28.172Z",
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"dateUpdated": "2026-10-30T12:28:30.974Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-30T12:28:30.974Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock\n\nWhen a netlink socket that owns a PMSR session is closed,\ncfg80211_release_pmsr() clears the request's nl_portid and queues\npmsr_free_wk to call cfg80211_pmsr_process_abort() asynchronously.\n\nIf the interface tears down concurrently, cfg80211_pmsr_wdev_down()\nis called under wiphy_lock and calls cancel_work_sync(&pmsr_free_wk)\nto wait for any running work. The work function acquires wiphy_lock\nvia guard(wiphy) before calling process_abort.\n\nThis is a deadlock: wdev_down holds wiphy_lock and blocks inside\ncancel_work_sync(); pmsr_free_wk blocks trying to acquire that same\nwiphy_lock. Neither thread can proceed.\n\nThe same deadlock is reachable from cfg80211_leave_locked(), which\ncalls cfg80211_pmsr_wdev_down() for all interface types under\nwiphy_lock.\n\nFix this by converting pmsr_free_wk from a plain work_struct to a\nwiphy_work. The wiphy_work dispatcher holds wiphy_lock when running\nwork items, so the explicit guard(wiphy) in the work function is no\nlonger needed. wiphy_work_cancel() can be called safely while holding\nwiphy_lock - since wiphy_lock prevents the work from running\nconcurrently, wiphy_work_cancel() never blocks, eliminating the\ndeadlock.\n\nRemove the cancel_work_sync() for pmsr_free_wk from the\nNETDEV_GOING_DOWN handler. cfg80211_leave(), called unconditionally\njust before it, already cancels any pending work under wiphy_lock\nvia wiphy_work_cancel() inside cfg80211_pmsr_wdev_down()."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"include/net/cfg80211.h",
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"net/wireless/core.c",
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"net/wireless/core.h",
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"net/wireless/pmsr.c"
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],
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"versions": [
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{
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"version": "28d3551f8d8cb3aec7497894d94150fe84d20e5e",
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"lessThan": "efe47df4de5e3e19b0670c5f2f67bdc4c9dc02af",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "37e776e2e0a523731e2470dce6d563f0e8632a40",
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"lessThan": "30c67926d41c456809857976cd3cd71b2290e0c1",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "d32c07ef1880fe20cf4ab223dbfedc9c0b2816aa",
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"lessThan": "21512b5f7a74fd18c996c22e6854efe57d570816",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "a1b7a843f12a0c3e9d3a2ca607ce451916ef42cf",
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"lessThan": "133684982dd0c24359fcc641d19d89cc17d6e5ef",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09",
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"lessThan": "0a77d9fb4d5c0e01306cd406ffdee8f1fe955c0e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6dccbc9f3e1d38565dff7730d2b7d1e8b16c9b09",
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"lessThan": "2b0eab425e1f658d8fe1df7590e3b9af5959505e",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "72b7ea786b8e570ae11149e9089859a4a8634a13",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.1.167",
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"lessThan": "6.1.191",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.6.130",
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"lessThan": "6.6.160",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.12.78",
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"lessThan": "6.12.101",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.18.20",
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"lessThan": "6.18.42",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.19.10",
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"lessThan": "6.20",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"include/net/cfg80211.h",
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"net/wireless/core.c",
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"net/wireless/core.h",
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"net/wireless/pmsr.c"
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],
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"versions": [
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{
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"version": "7.0",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.0",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.191",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.160",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.101",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.42",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.6",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.1.167",
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"versionEndExcluding": "6.1.191"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.6.130",
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"versionEndExcluding": "6.6.160"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12.78",
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"versionEndExcluding": "6.12.101"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18.20",
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"versionEndExcluding": "6.18.42"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.0",
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"versionEndExcluding": "7.1.6"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.0",
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"versionEndExcluding": "7.2"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.19.10"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/efe47df4de5e3e19b0670c5f2f67bdc4c9dc02af"
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},
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{
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"url": "https://git.kernel.org/stable/c/30c67926d41c456809857976cd3cd71b2290e0c1"
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},
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{
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"url": "https://git.kernel.org/stable/c/21512b5f7a74fd18c996c22e6854efe57d570816"
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},
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{
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"url": "https://git.kernel.org/stable/c/133684982dd0c24359fcc641d19d89cc17d6e5ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/0a77d9fb4d5c0e01306cd406ffdee8f1fe955c0e"
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},
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{
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"url": "https://git.kernel.org/stable/c/2b0eab425e1f658d8fe1df7590e3b9af5959505e"
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}
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],
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"title": "wifi: cfg80211: convert pmsr_free_wk to wiphy_work to fix deadlock",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |