{"id":"CVE-2024-26993","summary":"fs: sysfs: Fix reference leak in sysfs_break_active_protection()","details":"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-\u003eparent 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.","modified":"2026-04-15T23:59:30.591789141Z","published":"2024-05-01T05:28:02.462Z","related":["ALSA-2024:3618","ALSA-2024:3619","ALSA-2024:3627","SUSE-SU-2024:1643-1","SUSE-SU-2024:1644-1","SUSE-SU-2024:1646-1","SUSE-SU-2024:1659-1","SUSE-SU-2024:1663-1","SUSE-SU-2024:1870-1","SUSE-SU-2024:2135-1","SUSE-SU-2024:2203-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26993.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/43f00210cb257bcb0387e8caeb4b46375d67f30c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/57baab0f376bec8f54b0fe6beb8f77a57c228063"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5d43e072285e81b0b63cee7189b3357c7768a43b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a4c99b57d43bab45225ba92d574a8683f9edc8e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a90bca2228c0646fc29a72689d308e5fe03e6d78"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ac107356aabc362aaeb77463e814fc067a5d3957"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f28bba37fe244889b81bb5c508d3f6e5c6e342c5"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EZ6PJW7VOZ224TD7N4JZNU6KV32ZJ53/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DAMSOZXJEPUOXW33WZYWCVAY7Z5S7OOY/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCBZZEC7L7KTWWAS2NLJK6SO3IZIL4WW/"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26993.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26993"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"2afc9166f79b8f6da5f347f48515215ceee4ae37"},{"fixed":"f28bba37fe244889b81bb5c508d3f6e5c6e342c5"},{"fixed":"57baab0f376bec8f54b0fe6beb8f77a57c228063"},{"fixed":"84bd4c2ae9c3d0a7d3a5c032ea7efff17af17e17"},{"fixed":"43f00210cb257bcb0387e8caeb4b46375d67f30c"},{"fixed":"5d43e072285e81b0b63cee7189b3357c7768a43b"},{"fixed":"ac107356aabc362aaeb77463e814fc067a5d3957"},{"fixed":"a4c99b57d43bab45225ba92d574a8683f9edc8e4"},{"fixed":"a90bca2228c0646fc29a72689d308e5fe03e6d78"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"e8a37b2fd5b5087bec6cbbf6946ee3caa712953b"},{"last_affected":"a6abc93760dd07fcd29760b70e6e7520f22cb288"},{"last_affected":"461a6385e58e8247e6ba2005aa5d1b8d980ee4a2"},{"last_affected":"8a5e02a0f46ea33ed19e48e096a8e8d28e73d10a"},{"last_affected":"c984f4d1d40a2f349503b3faf946502ccbf02f9f"},{"last_affected":"807d1d299a04e9ad9a9dac55419c1137a105254b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-26993.json"}}],"schema_version":"1.7.5"}