FKIE_CVE-2026-74373

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-10-21 13:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix bio accounting for split md cloned bios Use md_cloned_bio() to control bio accounting instead of relying on r1bio_existed in raid1 or the io_accounting flag in raid10. The previous logic does not reliably reflect whether a bio is an md cloned bio. When a failed bio is split and resubmitted via bio_submit_split_bioset() on the error path, this can lead to either double accounting for md cloned bios, or missing accounting for bios returned from bio_submit_split_bioset() Fix this by using md_cloned_bio() to detect md cloned bios and skip accounting accordingly.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/235d16ae715104b981a4fbc9434398e3816773b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91d0fc000d8cc40fcb4285e6160dd1ce98c56201
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c",
            "drivers/md/raid10.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "91d0fc000d8cc40fcb4285e6160dd1ce98c56201",
              "status": "affected",
              "version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243",
              "versionType": "git"
            },
            {
              "lessThan": "235d16ae715104b981a4fbc9434398e3816773b1",
              "status": "affected",
              "version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243",
              "versionType": "git"
            },
            {
              "lessThan": "bcf30e14d2bd509c57e93021b46aedc878896e7b",
              "status": "affected",
              "version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243",
              "versionType": "git"
            },
            {
              "lessThan": "bb8d7ea74206b419aa05d7773a15a923b668c9f0",
              "status": "affected",
              "version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243",
              "versionType": "git"
            },
            {
              "lessThan": "ba976e3501111d11c550848b3b7341a73035f582",
              "status": "affected",
              "version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/raid1.c",
            "drivers/md/raid10.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "lessThan": "6.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "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\nmd/raid1,raid10: fix bio accounting for split md cloned bios\n\nUse md_cloned_bio() to control bio accounting instead of relying\non r1bio_existed in raid1 or the io_accounting flag in raid10.\n\nThe previous logic does not reliably reflect whether a bio is an\nmd cloned bio. When a failed bio is split and resubmitted via\nbio_submit_split_bioset() on the error path, this can lead to either\ndouble accounting for md cloned bios, or missing accounting for bios\nreturned from bio_submit_split_bioset()\n\nFix this by using md_cloned_bio() to detect md cloned bios and\nskip accounting accordingly."
    }
  ],
  "id": "CVE-2026-74373",
  "lastModified": "2026-10-21T13:19:43.147",
  "metrics": {},
  "published": "2026-08-15T06:22:39.070",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/235d16ae715104b981a4fbc9434398e3816773b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/91d0fc000d8cc40fcb4285e6160dd1ce98c56201"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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