CVE-2026-74373

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74373", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.889Z", "datePublished": "2026-08-15T05:58:52.990Z", "dateUpdated": "2026-10-21T12:45:30.565Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:45:30.565Z"}, "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/raid1.c", "drivers/md/raid10.c"], "versions": [{"version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243", "lessThan": "91d0fc000d8cc40fcb4285e6160dd1ce98c56201", "status": "affected", "versionType": "git"}, {"version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243", "lessThan": "235d16ae715104b981a4fbc9434398e3816773b1", "status": "affected", "versionType": "git"}, {"version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243", "lessThan": "bcf30e14d2bd509c57e93021b46aedc878896e7b", "status": "affected", "versionType": "git"}, {"version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243", "lessThan": "bb8d7ea74206b419aa05d7773a15a923b668c9f0", "status": "affected", "versionType": "git"}, {"version": "bb2a9acefaf9ce5bbc1e70f407e34599233d0243", "lessThan": "ba976e3501111d11c550848b3b7341a73035f582", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/md/raid1.c", "drivers/md/raid10.c"], "versions": [{"version": "6.6", "status": "affected"}, {"version": "0", "lessThan": "6.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "6.18.57"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/91d0fc000d8cc40fcb4285e6160dd1ce98c56201"}, {"url": "https://git.kernel.org/stable/c/235d16ae715104b981a4fbc9434398e3816773b1"}, {"url": "https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b"}, {"url": "https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0"}, {"url": "https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582"}], "title": "md/raid1,raid10: fix bio accounting for split md cloned bios", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"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"}

{"bugzilla": {"description": "kernel: md/raid1,raid10: fix bio accounting for split md cloned bios", "id": "2516772", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516772"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmd/raid1,raid10: fix bio accounting for split md cloned bios\nUse md_cloned_bio() to control bio accounting instead of relying\non r1bio_existed in raid1 or the io_accounting flag in raid10.\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()\nFix this by using md_cloned_bio() to detect md cloned bios and\nskip accounting accordingly.", "A flaw was found in the Linux kernel's md/raid1 and raid10 components. This flaw involves incorrect accounting of block I/O (bio) operations for split cloned bios. When a failed bio is split and resubmitted, the system may either double count or miss accounting for these bios. This can lead to resource management issues and potential system instability."], "name": "CVE-2026-74373", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74373\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74373\nhttps://lore.kernel.org/linux-cve-announce/2026081503-CVE-2026-74373-9244@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bb2a9acefaf9ce5bbc1e70f407e34599233d0243,bb8d7ea74206b419aa05d7773a15a923b668c9f0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bb2a9acefaf9ce5bbc1e70f407e34599233d0243,ba976e3501111d11c550848b3b7341a73035f582)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.6"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.6)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T17:00:12.632653+00:00", "updated": "2026-08-22T00:00:16.115877+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-746", "CWE-911"]}