{"id":"CVE-2024-26993","revision":null,"records":[{"revision":"c208d86581f6409ab88773ec88d80e77","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-26993","aliases":[],"title":"fs: sysfs: Fix reference leak in sysfs_break_active_protection()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs: sysfs: Fix reference leak in sysfs_break_active_protection()\n\nThe sysfs_break_active_protection() routine has an obvious reference\nleak in its error path. If the call to kernfs_find_and_get() fails then\nkn will be NULL, so the companion sysfs_unbreak_active_protection()\nroutine won't get called (and would only cause an access violation by\ntrying to dereference kn->parent if it was called). As a result, the\nreference to kobj acquired at the start of the function will never be\nreleased.\n\nFix the leak by adding an explicit kobject_put() call when kn is NULL.","state":0,"publishedAt":"2024-05-01T05:28:02.462+00:00","modifiedAt":"2026-10-15T00:39:44.909+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/sysfs/file.c\"\n ],\n \"versions\": [\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"f28bba37fe244889b81bb5c508d3f6e5c6e342c5\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"57baab0f376bec8f54b0fe6beb8f77a57c228063\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"43f00210cb257bcb0387e8caeb4b46375d67f30c\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"5d43e072285e81b0b63cee7189b3357c7768a43b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"ac107356aabc362aaeb77463e814fc067a5d3957\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"a4c99b57d43bab45225ba92d574a8683f9edc8e4\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"2afc9166f79b8f6da5f347f48515215ceee4ae37\",\n \"lessThan\": \"a90bca2228c0646fc29a72689d308e5fe03e6d78\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e8a37b2fd5b5087bec6cbbf6946ee3caa712953b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"a6abc93760dd07fcd29760b70e6e7520f22cb288\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"461a6385e58e8247e6ba2005aa5d1b8d980ee4a2\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8a5e02a0f46ea33ed19e48e096a8e8d28e73d10a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"c984f4d1d40a2f349503b3faf946502ccbf02f9f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"807d1d299a04e9ad9a9dac55419c1137a105254b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"3.16.62\",\n \"lessThan\": \"3.17\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"3.18.121\",\n \"lessThan\": \"3.19\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.4.154\",\n \"lessThan\": \"4.5\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.9.125\",\n \"lessThan\": \"4.10\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.68\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.18.6\",\n \"lessThan\": \"4.19\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"fs/sysfs/file.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.19\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.19\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.313\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.275\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.216\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.157\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.88\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.29\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.8\",\n \"lessThanOrEqual\": \"6.8.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5","https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063","https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17","https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c","https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b","https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957","https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4","https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26993","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26993","identifiers":["CVE-2024-26993"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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