CVE-2026-74375
Description
In the Linux kernel, the following vulnerability has been resolved: md/raid1,raid10: fix deadlock in read error recovery path raid1d and raid10d may resubmit a split md cloned bio while handling a read error. In this case, resubmitting the bio can lead to a deadlock if the array is suspended before md_handle_request() acquires an active_io reference via percpu_ref_tryget_live(). Since the cloned bio already holds an active_io reference, trying to acquire another reference via percpu_ref_tryget_live() can lead to a deadlock while the array is suspended. Fix this by using percpu_ref_get() for md cloned bios.
How to fix
- Linux Linux923a6f3172a362d6b2ff12386e376e0e47188f78, 0889242775340e2c5b69b1590bd71335dd4fdeda, ea2d1d2ebf60b70b602a92261a567d5fc4575eab, 38777f014c37972868f1733a651c85288bb8a757, 7b15c24f805339a585cfe7d72f446b7e88b9bcc0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 923a6f3172a362d6b2ff12386e376e0e47188f78, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 0889242775340e2c5b69b1590bd71335dd4fdeda, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < ea2d1d2ebf60b70b602a92261a567d5fc4575eab, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 38777f014c37972868f1733a651c85288bb8a757, bb2a9acefaf9ce5bbc1e70f407e34599233d0243 ≤ v < 7b15c24f805339a585cfe7d72f446b7e88b9bcc0, 6.6 | 923a6f3172a362d6b2ff12386e376e0e47188f78, 0889242775340e2c5b69b1590bd71335dd4fdeda, ea2d1d2ebf60b70b602a92261a567d5fc4575eab, 38777f014c37972868f1733a651c85288bb8a757, 7b15c24f805339a585cfe7d72f446b7e88b9bcc0 |
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