CVE-2026-74373
Description
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.
How to fix
- Linux Linux91d0fc000d8cc40fcb4285e6160dd1ce98c56201, 235d16ae715104b981a4fbc9434398e3816773b1, bcf30e14d2bd509c57e93021b46aedc878896e7b, bb8d7ea74206b419aa05d7773a15a923b668c9f0, ba976e3501111d11c550848b3b7341a73035f582 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 91d0fc000d8cc40fcb4285e6160dd1ce98c56201, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 235d16ae715104b981a4fbc9434398e3816773b1, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < bcf30e14d2bd509c57e93021b46aedc878896e7b, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < bb8d7ea74206b419aa05d7773a15a923b668c9f0, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < ba976e3501111d11c550848b3b7341a73035f582, 6.6 | 91d0fc000d8cc40fcb4285e6160dd1ce98c56201, 235d16ae715104b981a4fbc9434398e3816773b1, bcf30e14d2bd509c57e93021b46aedc878896e7b, bb8d7ea74206b419aa05d7773a15a923b668c9f0, ba976e3501111d11c550848b3b7341a73035f582 |
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