{"id":"CVE-2025-22124","summary":"md/md-bitmap: fix wrong bitmap_limit for clustermd when write sb","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/md-bitmap: fix wrong bitmap_limit for clustermd when write sb\n\nIn clustermd, separate write-intent-bitmaps are used for each cluster\nnode:\n\n0                    4k                     8k                    12k\n-------------------------------------------------------------------\n| idle                | md super            | bm super [0] + bits |\n| bm bits[0, contd]   | bm super[1] + bits  | bm bits[1, contd]   |\n| bm super[2] + bits  | bm bits [2, contd]  | bm super[3] + bits  |\n| bm bits [3, contd]  |                     |                     |\n\nSo in node 1, pg_index in __write_sb_page() could equal to\nbitmap-\u003estorage.file_pages. Then bitmap_limit will be calculated to\n0. md_super_write() will be called with 0 size.\nThat means the first 4k sb area of node 1 will never be updated\nthrough filemap_write_page().\nThis bug causes hang of mdadm/clustermd_tests/01r1_Grow_resize.\n\nHere use (pg_index % bitmap-\u003estorage.file_pages) to make calculation\nof bitmap_limit correct.","modified":"2026-03-20T12:41:20.414219Z","published":"2025-04-16T14:13:08.134Z","related":["SUSE-SU-2025:01964-1","SUSE-SU-2025:01965-1","SUSE-SU-2025:02000-1","SUSE-SU-2025:02254-1","SUSE-SU-2025:02307-1","SUSE-SU-2025:02333-1","SUSE-SU-2025:02923-1","SUSE-SU-2025:20408-1","SUSE-SU-2025:20413-1","SUSE-SU-2025:20419-1","SUSE-SU-2025:20421-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22124.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/60196f92bbc7901eb5cfa5d456651b87ea50a4a3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6130825f34d41718c98a9b1504a79a23e379701e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc3a9788961631359527763d7e1fcf26554c7cb1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/22xxx/CVE-2025-22124.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-22124"},{"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":"ab99a87542f194f28e2364a42afbf9fb48b1c724"},{"fixed":"60196f92bbc7901eb5cfa5d456651b87ea50a4a3"},{"fixed":"bc3a9788961631359527763d7e1fcf26554c7cb1"},{"fixed":"6130825f34d41718c98a9b1504a79a23e379701e"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"655cc01889fa9b65441922565cddee64af49e6d6"},{"last_affected":"5600d6013c634c2b6b6c6c55c8ecb50c3a6211f2"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-22124.json"}}],"schema_version":"1.7.5"}