CVE-2026-74373
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.
Affected versions
Linux kernel versions
6.6
and later are affected. Fixed in
7.1.5,
7.2-rc1
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-74373?
CVE-2026-74373 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.6 onward and has been patched in 7.1.5 and 7.2-rc1. CVE-2026-74373 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74373?
Yes. CVE-2026-74373 has been patched. Fixed versions include 7.1.5 and 7.2-rc1. If you are running Linux kernel 6.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74373 actively exploited?
No. CVE-2026-74373 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.