{"id":"CVE-2026-74373","state":"PUBLISHED","title":"md/raid1,raid10: fix bio accounting for split md cloned bios","description":"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.","publishedAt":"2026-08-15T05:58:52.990Z","updatedAt":"2026-10-21T12:45:30.565Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"91d0fc000d8cc40fcb4285e6160dd1ce98c56201","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"235d16ae715104b981a4fbc9434398e3816773b1","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"bcf30e14d2bd509c57e93021b46aedc878896e7b","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"bb8d7ea74206b419aa05d7773a15a923b668c9f0","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"ba976e3501111d11c550848b3b7341a73035f582","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c","drivers/md/raid10.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c","drivers/md/raid10.c"]}],"references":["https://git.kernel.org/stable/c/91d0fc000d8cc40fcb4285e6160dd1ce98c56201","https://git.kernel.org/stable/c/235d16ae715104b981a4fbc9434398e3816773b1","https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b","https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0","https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74373.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74373","state":"PUBLISHED","datePublished":"2026-08-15T05:58:52.990Z","dateUpdated":"2026-10-21T12:45:30.565Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.889Z"},"containers":{"cna":{"title":"md/raid1,raid10: fix bio accounting for split md cloned bios","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"91d0fc000d8cc40fcb4285e6160dd1ce98c56201","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"235d16ae715104b981a4fbc9434398e3816773b1","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"bcf30e14d2bd509c57e93021b46aedc878896e7b","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"bb8d7ea74206b419aa05d7773a15a923b668c9f0","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"ba976e3501111d11c550848b3b7341a73035f582","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c","drivers/md/raid10.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/raid1.c","drivers/md/raid10.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:45:30.565Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}