{"id":"CVE-2025-22124","title":"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  …","summary":"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  …","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.6.44, < 6.7","linux_kernel >= 6.10.3, < 6.12.46","linux_kernel >= 6.13, < 6.14.2"],"patched":["linux_kernel 6.14.2"],"published":"2025-04-16","updated":"2026-10-15","sourceUpdated":"2026-10-15T22:18:15.483","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-22124","references":[{"url":"https://git.kernel.org/stable/c/5eaf57fdfa37c869e61e9908e03edd707f9145b8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/60196f92bbc7901eb5cfa5d456651b87ea50a4a3","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6130825f34d41718c98a9b1504a79a23e379701e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bc3a9788961631359527763d7e1fcf26554c7cb1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00198,"epssPercentile":0.09547,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:44:34.243767Z"},"ingestedAt":"2026-09-14T15:23:07.459Z","slug":"CVE-2025-22124","body":"## Overview\n\nIn 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->storage.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->storage.file_pages) to make calculation\nof bitmap_limit correct.\n\n## Affected\n\n- `linux_kernel >= 6.6.44, < 6.7`\n- `linux_kernel >= 6.10.3, < 6.12.46`\n- `linux_kernel >= 6.13, < 6.14.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.14.2`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}