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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 91d0fc000d8cc40fcb4285e6160dd1ce98c56201; >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < 235d16ae715104b981a4fbc9434398e3816773b1; >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < bcf30e14d2bd509c57e93021b46aedc878896e7b; >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < bb8d7ea74206b419aa05d7773a15a923b668c9f0; >= bb2a9acefaf9ce5bbc1e70f407e34599233d0243, < ba976e3501111d11c550848b3b7341a73035f582 |
| Linux | Linux | 6.6 |
References
- https://git.kernel.org/stable/c/235d16ae715104b981a4fbc9434398e3816773b1
- https://git.kernel.org/stable/c/91d0fc000d8cc40fcb4285e6160dd1ce98c56201
- https://git.kernel.org/stable/c/ba976e3501111d11c550848b3b7341a73035f582
- https://git.kernel.org/stable/c/bb8d7ea74206b419aa05d7773a15a923b668c9f0
- https://git.kernel.org/stable/c/bcf30e14d2bd509c57e93021b46aedc878896e7b
Timeline
- Published
- Aug 15, 2026
- Last modified
- Oct 21, 2026
- NVD status
- Received