{"id":"CVE-2026-45955","summary":"md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/md-llbitmap: fix percpu_ref not resurrected on suspend timeout\n\nWhen llbitmap_suspend_timeout() times out waiting for percpu_ref to\nbecome zero, it returns -ETIMEDOUT without resurrecting the percpu_ref.\nThe caller (md_llbitmap_daemon_fn) then continues to the next page\nwithout calling llbitmap_resume(), leaving the percpu_ref in a killed\nstate permanently.\n\nFix this by resurrecting the percpu_ref before returning the error,\nensuring the page control structure remains usable for subsequent\noperations.","modified":"2026-07-08T08:09:39.967454940Z","published":"2026-05-27T12:18:10.951Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45955.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45955.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45955"},{"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":"5ab829f1971dc99f2aac10846c378e67fc875abc"},{"fixed":"095417d6b669c2dec39a5842ccb94df915f97f54"},{"fixed":"2446d099350185caeed19ab2c0270451a97296fb"},{"fixed":"d119bd2e1643cc023210ff3c6f0657e4f914e71d"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45955.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45955.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"}]}