Riskcovery

CVE-2026-74373

md/raid1,raid10: fix bio accounting for split md cloned bios

State
Published
Severity
Not scored
Published
Aug 15, 2026
Updated
Oct 21, 2026
Reserved
Aug 15, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • bb2a9acefaf9ce5bbc1e70f407e34599233d0243 to before 91d0fc000d8cc40fcb4285e6160dd1ce98c56201Affected
  • bb2a9acefaf9ce5bbc1e70f407e34599233d0243 to before 235d16ae715104b981a4fbc9434398e3816773b1Affected
  • bb2a9acefaf9ce5bbc1e70f407e34599233d0243 to before bcf30e14d2bd509c57e93021b46aedc878896e7bAffected
  • bb2a9acefaf9ce5bbc1e70f407e34599233d0243 to before bb8d7ea74206b419aa05d7773a15a923b668c9f0Affected
  • bb2a9acefaf9ce5bbc1e70f407e34599233d0243 to before ba976e3501111d11c550848b3b7341a73035f582Affected
LinuxLinux
  • 6.6Affected
  • before 6.6Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.114 through 6.12.*Not affected
  • 6.18.57 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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