CVE-2026-90275md/raid1: don't set array_frozen in raid1_takeover()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: md/raid1: don't set array_frozen in raid1_takeover() raid1_takeover() sets conf->array_frozen = 1 on the newly-allocated r1conf and nothing ever clears it, so every I/O to the array stalls permanently once _wait_barrier() sees it stuck at 1. This used to be harmless: level_store() called mddev_resume() right after pers->run(), which called raid1_quiesce(mddev, 0) and cleared array_frozen back to 0 regardless of what raid1_takeover() set. Commit b39f35ebe86d ("md: don't quiesce in mddev_suspend()") removed that quiesce(mddev, 0) call, so the pre-set now sticks. setup_conf() already zero-initializes the new r1conf via kzalloc, so just don't set array_frozen here. Same class of bug as commit 892da88d1cd9 ("md/raid10: fix a 'conf->barrier' leakage in raid10_takeover()"), also triggered by b39f35ebe86d.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b39f35ebe86d88788d85f61e83c81c308cb76727 before 668d99ba47210ab6ceb18f1cf022c0accca7e3bb; from b39f35ebe86d88788d85f61e83c81c308cb76727 before c57ec2749ee03cace564eec7bb37c89dc3d8d47b; from b39f35ebe86d88788d85f61e83c81c308cb76727 before f9cdb5bb8efbf401e84d850828271af87e6be2dc; from b39f35ebe86d88788d85f61e83c81c308cb76727 before b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af; from b39f35ebe86d88788d85f61e83c81c308cb76727 before dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916 | CNA record |
References
- https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb
- https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b
- https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc
- https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af
- https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.