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FKIE_CVE-2026-74372

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: raid1: fix nr_pending leak in REQ_ATOMIC bad-block error path In raid1_write_request(), each per-mirror loop iteration begins by incrementing rdev->nr_pending. If a REQ_ATOMIC write encounters a badblock within the requested range, the code jumps to err_handle without dropping the reference taken for the current mirror. err_handle's cleanup loop will only decrements for k < i and r1_bio->bios[k] is non-NULL. The current slot is therefore skipped, leaving its nr_pending reference leaked permanently. The reference prevents the rdev from ever being removed, since raid1_remove_conf() refuses to remove an rdev with nr_pending > 0. Fix this by calling rdev_dec_pending() before jumping to err_handle.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ac9e793ba2583d72740d929e7858a6c82e22ed5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/731485617bf862f1289c3f40ed1f800d0475826f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/909d9dc3b5730c8ed7b764c68bc788342df2a07b
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5ac9e793ba2583d72740d929e7858a6c82e22ed5",
              "status": "affected",
              "version": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "versionType": "git"
            },
            {
              "lessThan": "731485617bf862f1289c3f40ed1f800d0475826f",
              "status": "affected",
              "version": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "versionType": "git"
            },
            {
              "lessThan": "909d9dc3b5730c8ed7b764c68bc788342df2a07b",
              "status": "affected",
              "version": "f2a38abf5f1c5aeb3be8e9f4d3d815c867fff7ca",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nraid1: fix nr_pending leak in REQ_ATOMIC bad-block error path\n\nIn raid1_write_request(), each per-mirror loop iteration begins by\nincrementing rdev-\u003enr_pending. If a REQ_ATOMIC write encounters a\nbadblock within the requested range, the code jumps to err_handle\nwithout dropping the reference taken for the current mirror.\n\nerr_handle\u0027s cleanup loop will only decrements for k \u003c i and\nr1_bio-\u003ebios[k] is non-NULL. The current slot is therefore skipped,\nleaving its nr_pending reference leaked permanently. The reference\nprevents the rdev from ever being removed, since raid1_remove_conf()\nrefuses to remove an rdev with nr_pending \u003e 0.\n\nFix this by calling rdev_dec_pending() before jumping to err_handle."
    }
  ],
  "id": "CVE-2026-74372",
  "lastModified": "2026-08-17T06:19:32.023",
  "metrics": {},
  "published": "2026-08-15T06:22:38.967",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ac9e793ba2583d72740d929e7858a6c82e22ed5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/731485617bf862f1289c3f40ed1f800d0475826f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/909d9dc3b5730c8ed7b764c68bc788342df2a07b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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