{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46040", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-13T15:03:33.094Z", "datePublished": "2026-05-27T12:56:52.161Z", "dateUpdated": "2026-05-27T12:56:52.161Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-27T12:56:52.161Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ninotify: fix watch count leak when fsnotify_add_inode_mark_locked() fails\n\nWhen fsnotify_add_inode_mark_locked() fails in inotify_new_watch(),\nthe error path calls inotify_remove_from_idr() but does not call\ndec_inotify_watches() to undo the preceding inc_inotify_watches().\nThis leaks a watch count, and repeated failures can exhaust the\nmax_user_watches limit with -ENOSPC even when no watches are active.\n\nPrior to commit 1cce1eea0aff (\"inotify: Convert to using per-namespace\nlimits\"), the watch count was incremented after fsnotify_add_mark_locked()\nsucceeded, so this path was not affected. The conversion moved\ninc_inotify_watches() before the mark insertion without adding the\ncorresponding rollback.\n\nAdd the missing dec_inotify_watches() call in the error path."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/notify/inotify/inotify_user.c"], "versions": [{"version": "1cce1eea0aff51201753fcaca421df825b0813b6", "lessThan": "8bcc1cd237ab5ccfdd102869fa031c541943cf40", "status": "affected", "versionType": "git"}, {"version": "1cce1eea0aff51201753fcaca421df825b0813b6", "lessThan": "73ddc8518a32baff6bc17afda4ee1ebae5b4ed12", "status": "affected", "versionType": "git"}, {"version": "1cce1eea0aff51201753fcaca421df825b0813b6", "lessThan": "fdaa42ca370d056428e5e171247c8fdce8dff36a", "status": "affected", "versionType": "git"}, {"version": "1cce1eea0aff51201753fcaca421df825b0813b6", "lessThan": "9e48844f708eb48bae4e79cb21edc097c966306d", "status": "affected", "versionType": "git"}, {"version": "1cce1eea0aff51201753fcaca421df825b0813b6", "lessThan": "6a320935fa4293e9e599ec9f85dc9eb3be7029f8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/notify/inotify/inotify_user.c"], "versions": [{"version": "4.11", "status": "affected"}, {"version": "0", "lessThan": "4.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.140", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.86", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.27", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.4", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.6.140"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.12.86"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "6.18.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.0.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.11", "versionEndExcluding": "7.1-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8bcc1cd237ab5ccfdd102869fa031c541943cf40"}, {"url": "https://git.kernel.org/stable/c/73ddc8518a32baff6bc17afda4ee1ebae5b4ed12"}, {"url": "https://git.kernel.org/stable/c/fdaa42ca370d056428e5e171247c8fdce8dff36a"}, {"url": "https://git.kernel.org/stable/c/9e48844f708eb48bae4e79cb21edc097c966306d"}, {"url": "https://git.kernel.org/stable/c/6a320935fa4293e9e599ec9f85dc9eb3be7029f8"}], "title": "inotify: fix watch count leak when fsnotify_add_inode_mark_locked() fails", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ninotify: fix watch count leak when fsnotify_add_inode_mark_locked() fails\n\nWhen fsnotify_add_inode_mark_locked() fails in inotify_new_watch(),\nthe error path calls inotify_remove_from_idr() but does not call\ndec_inotify_watches() to undo the preceding inc_inotify_watches().\nThis leaks a watch count, and repeated failures can exhaust the\nmax_user_watches limit with -ENOSPC even when no watches are active.\n\nPrior to commit 1cce1eea0aff (\"inotify: Convert to using per-namespace\nlimits\"), the watch count was incremented after fsnotify_add_mark_locked()\nsucceeded, so this path was not affected. The conversion moved\ninc_inotify_watches() before the mark insertion without adding the\ncorresponding rollback.\n\nAdd the missing dec_inotify_watches() call in the error path."}], "id": "CVE-2026-46040", "lastModified": "2026-05-27T14:48:03.013", "metrics": {}, "published": "2026-05-27T14:17:23.387", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6a320935fa4293e9e599ec9f85dc9eb3be7029f8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/73ddc8518a32baff6bc17afda4ee1ebae5b4ed12"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8bcc1cd237ab5ccfdd102869fa031c541943cf40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e48844f708eb48bae4e79cb21edc097c966306d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fdaa42ca370d056428e5e171247c8fdce8dff36a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{}