{"id":"CVE-2026-45953","summary":"md/raid5: fix IO hang with degraded array with llbitmap","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid5: fix IO hang with degraded array with llbitmap\n\nWhen llbitmap bit state is still unwritten, any new write should force\nrcw, as bitmap_ops-\u003eblocks_synced() is checked in handle_stripe_dirtying().\nHowever, later the same check is missing in need_this_block(), causing\nstripe to deadloop during handling because handle_stripe() will decide\nto go to handle_stripe_fill(), meanwhile need_this_block() always return\n0 and nothing is handled.","modified":"2026-07-08T08:09:39.920743216Z","published":"2026-05-27T12:18:09.203Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45953.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/28ef299e7a5b81817f8ca8297c2ddff28f5da5e8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/870b9f15867b0e70f3459ef3974b043e8b229690"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cd1635d844d26471c56c0a432abdee12fc9ad735"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45953.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45953"},{"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":"870b9f15867b0e70f3459ef3974b043e8b229690"},{"fixed":"28ef299e7a5b81817f8ca8297c2ddff28f5da5e8"},{"fixed":"cd1635d844d26471c56c0a432abdee12fc9ad735"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45953.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-2026-45953.json"}}],"schema_version":"1.7.5"}