272 lines
14 KiB
JSON
272 lines
14 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-2026-52990",
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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": "2026-06-09T07:44:35.376Z",
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"datePublished": "2026-06-24T16:29:04.148Z",
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"dateUpdated": "2026-11-06T16:23:52.756Z"
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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": "2026-10-30T12:26:23.722Z"
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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\nfsnotify: fix inode reference leak in fsnotify_recalc_mask()\n\nfsnotify_recalc_mask() fails to handle the return value of\n__fsnotify_recalc_mask(), which may return an inode pointer that needs\nto be released via fsnotify_drop_object() when the connector's HAS_IREF\nflag transitions from set to cleared.\n\nThis manifests as a hung task with the following call trace:\n\n INFO: task umount:1234 blocked for more than 120 seconds.\n Call Trace:\n __schedule\n schedule\n fsnotify_sb_delete\n generic_shutdown_super\n kill_anon_super\n cleanup_mnt\n task_work_run\n do_exit\n do_group_exit\n\nThe race window that triggers the iref leak:\n\n Thread A (adding mark) Thread B (removing mark)\n ────────────────────── ────────────────────────\n fsnotify_add_mark_locked():\n fsnotify_add_mark_list():\n spin_lock(conn->lock)\n add mark_B(evictable) to list\n spin_unlock(conn->lock)\n return\n\n /* ---- gap: no lock held ---- */\n\n fsnotify_detach_mark(mark_A):\n spin_lock(mark_A->lock)\n clear ATTACHED flag on mark_A\n spin_unlock(mark_A->lock)\n fsnotify_put_mark(mark_A)\n\n fsnotify_recalc_mask():\n spin_lock(conn->lock)\n __fsnotify_recalc_mask():\n /* mark_A skipped: ATTACHED cleared */\n /* only mark_B(evictable) remains */\n want_iref = false\n has_iref = true /* not yet cleared */\n -> HAS_IREF transitions true -> false\n -> returns inode pointer\n spin_unlock(conn->lock)\n /* BUG: return value discarded!\n * iput() and fsnotify_put_sb_watched_objects()\n * are never called */\n\nFix this by deferring the transition true -> false of HAS_IREF flag from\nfsnotify_recalc_mask() (Thread A) to fsnotify_put_mark() (thread B)."
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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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"fs/notify/mark.c"
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],
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"versions": [
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{
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"version": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "ba4d88bfd58739698a9bd2309659c9cc26acf7f7",
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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": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "926ec3937b28d30c08427053c8d8af7f9e086d82",
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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": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "8c8afa6444e6bdc145d2bf2f3aeeca6da3e36b42",
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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": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "b740cc86816bbc87902ae9db74cd21abde3c8d63",
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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": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "5c80289503da3658e3df80280598c68d181eadbd",
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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": "c3638b5b13740fa31762d414bbce8b7a694e582a",
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"lessThan": "4aca914ac152f5d055ddcb36704d1e539ac08977",
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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": "ff34ebaa6f6dc1eebce6a8d6f12a1566f33d00fe",
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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": "4f145b67c075324b13d6ae7d5abb6e7a1dbac26d",
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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": "5.10.220",
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"lessThan": "5.11",
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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": "5.15.154",
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"lessThan": "5.16",
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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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"fs/notify/mark.c"
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],
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"versions": [
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{
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"version": "5.19",
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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": "5.19",
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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": "6.12.91",
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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": "6.18.33",
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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": "7.0.10",
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"lessThanOrEqual": "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": "7.1",
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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": "5.19",
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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": "5.19",
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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": "5.19",
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"versionEndExcluding": "6.12.91"
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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": "5.19",
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"versionEndExcluding": "6.18.33"
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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": "5.19",
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"versionEndExcluding": "7.0.10"
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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": "5.19",
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"versionEndExcluding": "7.1"
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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": "5.10.220"
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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": "5.15.154"
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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/ba4d88bfd58739698a9bd2309659c9cc26acf7f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/926ec3937b28d30c08427053c8d8af7f9e086d82"
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},
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{
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"url": "https://git.kernel.org/stable/c/8c8afa6444e6bdc145d2bf2f3aeeca6da3e36b42"
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},
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{
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"url": "https://git.kernel.org/stable/c/b740cc86816bbc87902ae9db74cd21abde3c8d63"
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},
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{
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"url": "https://git.kernel.org/stable/c/5c80289503da3658e3df80280598c68d181eadbd"
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},
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{
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"url": "https://git.kernel.org/stable/c/4aca914ac152f5d055ddcb36704d1e539ac08977"
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}
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],
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"title": "fsnotify: fix inode reference leak in fsnotify_recalc_mask()",
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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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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-52990",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-11-06T16:15:48.666965Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-06T16:23:52.756Z"
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}
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}
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]
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}
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} |