{"id":"CVE-2026-74373","title":"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_accou…","summary":"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_accou…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 < bcf30e14d2bd509c57e93021b46aedc878896e7b","Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 < bb8d7ea74206b419aa05d7773a15a923b668c9f0","Linux >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243 < ba976e3501111d11c550848b3b7341a73035f582","Linux 6.6"],"published":"2026-08-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T11:17:45.947","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74373","references":[{"url":"https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00219,"epssPercentile":0.11533,"ingestedAt":"2026-10-15T11:00:41.675Z","slug":"CVE-2026-74373","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}