{"id":"CVE-2026-45955","revision":"b51a095a82bd4315a9372358e40e2f67","records":[{"revision":"b51a095a82bd4315a9372358e40e2f67","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45955","aliases":[],"title":"md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout","description":"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.","state":0,"publishedAt":"2026-05-27T12:18:10.951+00:00","modifiedAt":"2026-10-19T19:26:40.445+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                        \"drivers/md/md-llbitmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5ab829f1971dc99f2aac10846c378e67fc875abc\",\n                            \"lessThan\": \"095417d6b669c2dec39a5842ccb94df915f97f54\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ab829f1971dc99f2aac10846c378e67fc875abc\",\n                            \"lessThan\": \"2446d099350185caeed19ab2c0270451a97296fb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5ab829f1971dc99f2aac10846c378e67fc875abc\",\n                            \"lessThan\": \"d119bd2e1643cc023210ff3c6f0657e4f914e71d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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                        \"drivers/md/md-llbitmap.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.14\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.4\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54","https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb","https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45955","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45955","identifiers":["CVE-2026-45955"]},"retained":false,"historicalAffected":[]}],"coverage":[]}