CVE-2026-90385 (GCVE-0-2026-90385)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-30 12:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid1: create serial pool adding rdev to array with serialize_policy=1 The following bug has been observed with kernel 7.1.3 after adding a new rdev to an existing RAID1 array with serialize_policy enabled: Oops: 0002 [#1] CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default RIP: _raw_spin_lock_irqsave+0x27/0x50 CR2: 0000000000004960 Call Trace: wait_for_serialization+0xb9/0x260 [raid1] raid1_make_request+0x762/0xaff [raid1] md_handle_request+0x1c9/0x2e0 [md_mod] The raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY is set, and wait_for_serialization assumes that rdev->serial is initialized. Normally this will be the case for arrays that have the serialize_policy sysfs attribute set to 1. But when a new rdev is added to an existing array in bind_rdev_to_array(), the condition at mddev_create_serial_pool() causes creation of rdev->serial to be skipped. Fix it.
References
Impacted products
Vendor Product Version
Linux Linux Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
Version: 69b00b5bb23552d43e8bbed73ef6624604bb94a2
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{
  "containers": {
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          "programFiles": [
            "drivers/md/md.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "6.1.191",
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              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
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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: create serial pool adding rdev to array with serialize_policy=1\n\nThe following bug has been observed with kernel 7.1.3 after adding a new\nrdev to an existing RAID1 array with serialize_policy enabled:\n\n  Oops: 0002 [#1]\n  CPU: 0 UID: 0 PID: 19639 Comm: ext4lazyinit Not tainted 7.1.3-1-default\n  RIP: _raw_spin_lock_irqsave+0x27/0x50\n  CR2: 0000000000004960\n  Call Trace:\n   wait_for_serialization+0xb9/0x260 [raid1]\n   raid1_make_request+0x762/0xaff [raid1]\n   md_handle_request+0x1c9/0x2e0 [md_mod]\n\nThe raid1.c code calls wait_for_serialization() if the MD_SERIALIZE_POLICY\nis set, and wait_for_serialization assumes that rdev-\u003eserial is\ninitialized. Normally this will be the case for arrays that have\nthe serialize_policy sysfs attribute set to 1.\n\nBut when a new rdev is added to an existing array in bind_rdev_to_array(),\nthe condition at mddev_create_serial_pool() causes creation of rdev-\u003eserial\nto be skipped. Fix it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:35:27.082Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6ea458171bed2b706dc7bcd80b15356c0e9ed718"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b187e14dab458d54425fc400f1e1e8d481d9bcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9e4364449f7ca6917f3599eb32064dba5b7b147"
        },
        {
          "url": "https://git.kernel.org/stable/c/37f11973c3eb72a5eb061082cad529bb6939c24f"
        },
        {
          "url": "https://git.kernel.org/stable/c/c02d675e81468003e4f2253b616c53729070d712"
        },
        {
          "url": "https://git.kernel.org/stable/c/140234b2380ffb8ffb0cfc46fee0e822f43adef7"
        }
      ],
      "title": "md/raid1: create serial pool adding rdev to array with serialize_policy=1",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90385",
    "datePublished": "2026-09-17T16:09:21.198Z",
    "dateReserved": "2026-09-11T19:38:34.809Z",
    "dateUpdated": "2026-10-30T12:35:27.082Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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