{"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":"2026-06-14T17:49:57.876Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T17:49:57.876Z"},"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":"3ab58cf42c46bf2366d2f55ae5c59299d5e178b7","status":"affected","versionType":"git"},{"version":"1cce1eea0aff51201753fcaca421df825b0813b6","lessThan":"10edf7e0ffdc7faa18e2244b17722c1b882b8273","status":"affected","versionType":"git"},{"version":"1cce1eea0aff51201753fcaca421df825b0813b6","lessThan":"3ad9ccea1b25435f6179b57aa891960beb7ce8f9","status":"affected","versionType":"git"},{"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":"5.10.258","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.209","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.175","lessThanOrEqual":"6.1.*","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","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":"5.10.258"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.11","versionEndExcluding":"5.15.209"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.11","versionEndExcluding":"6.1.175"},{"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"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3ab58cf42c46bf2366d2f55ae5c59299d5e178b7"},{"url":"https://git.kernel.org/stable/c/10edf7e0ffdc7faa18e2244b17722c1b882b8273"},{"url":"https://git.kernel.org/stable/c/3ad9ccea1b25435f6179b57aa891960beb7ce8f9"},{"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"}}}}