{"id":"CVE-2026-90275","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don't set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf->array_frozen = 1 on the newly-allocated\nr1conf and nothing ever clears it, so every I/…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don't set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf->array_frozen = 1 on the newly-allocated\nr1conf and nothing ever clears it, so every I/…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b39f35ebe86d88788d85f61e83c81c308cb76727 < 668d99ba47210ab6ceb18f1cf022c0accca7e3bb","Linux >= b39f35ebe86d88788d85f61e83c81c308cb76727 < c57ec2749ee03cace564eec7bb37c89dc3d8d47b","Linux >= b39f35ebe86d88788d85f61e83c81c308cb76727 < f9cdb5bb8efbf401e84d850828271af87e6be2dc","Linux >= b39f35ebe86d88788d85f61e83c81c308cb76727 < b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af","Linux >= b39f35ebe86d88788d85f61e83c81c308cb76727 < dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916","Linux 6.6"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:24.130","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90275","references":[{"url":"https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.836Z","epss":0.00168,"epssPercentile":0.06474,"slug":"CVE-2026-90275","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don't set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf->array_frozen = 1 on the newly-allocated\nr1conf and nothing ever clears it, so every I/O to the array stalls\npermanently once _wait_barrier() sees it stuck at 1.\n\nThis used to be harmless: level_store() called mddev_resume() right\nafter pers->run(), which called raid1_quiesce(mddev, 0) and cleared\narray_frozen back to 0 regardless of what raid1_takeover() set. Commit\nb39f35ebe86d (\"md: don't quiesce in mddev_suspend()\") removed that\nquiesce(mddev, 0) call, so the pre-set now sticks.\n\nsetup_conf() already zero-initializes the new r1conf via kzalloc, so\njust don't set array_frozen here.\n\nSame class of bug as commit 892da88d1cd9 (\"md/raid10: fix a\n'conf->barrier' leakage in raid10_takeover()\"), also triggered by\nb39f35ebe86d.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}