CVE-2026-90275 (GCVE-0-2026-90275)
Vulnerability from cvelistv5
Published
2026-09-17 16:08
Modified
2026-10-19 09:00
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: b39f35ebe86d88788d85f61e83c81c308cb76727
Version: b39f35ebe86d88788d85f61e83c81c308cb76727
Version: b39f35ebe86d88788d85f61e83c81c308cb76727
Version: b39f35ebe86d88788d85f61e83c81c308cb76727
Version: b39f35ebe86d88788d85f61e83c81c308cb76727
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c"
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          "programFiles": [
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          "vendor": "Linux",
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              "version": "7.2.6",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:00:52.887Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/668d99ba47210ab6ceb18f1cf022c0accca7e3bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/c57ec2749ee03cace564eec7bb37c89dc3d8d47b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9cdb5bb8efbf401e84d850828271af87e6be2dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/b6ec4bf1ec4446c0213c08ea493e48e6b83cd1af"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc386aa0ac0a3ec06c9a3ea9b064b073fb72a916"
        }
      ],
      "title": "md/raid1: don\u0027t set array_frozen in raid1_takeover()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90275",
    "datePublished": "2026-09-17T16:08:08.053Z",
    "dateReserved": "2026-09-11T19:38:34.797Z",
    "dateUpdated": "2026-10-19T09:00:52.887Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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