GHSA-C82R-J325-QWCG
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31In 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.
{
"affected": [],
"aliases": [
"CVE-2026-90275"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:24Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1: don\u0027t set array_frozen in raid1_takeover()\n\nraid1_takeover() sets conf-\u003earray_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-\u003erun(), which called raid1_quiesce(mddev, 0) and cleared\narray_frozen back to 0 regardless of what raid1_takeover() set. Commit\nb39f35ebe86d (\"md: don\u0027t 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\u0027t set array_frozen here.\n\nSame class of bug as commit 892da88d1cd9 (\"md/raid10: fix a\n\u0027conf-\u003ebarrier\u0027 leakage in raid10_takeover()\"), also triggered by\nb39f35ebe86d.",
"id": "GHSA-c82r-j325-qwcg",
"modified": "2026-09-17T18:31:58Z",
"published": "2026-09-17T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90275"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc"
}
],
"schema_version": "1.4.0",
"severity": []
}
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