{
    "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"
                                },
                                {
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                                    "versionStartIncluding": "4.11",
                                    "versionEndExcluding": "7.1"
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                }
            ],
            "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",
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}