CVE-2026-46051
In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix soft lockup in retry_aligned_read() When retry_aligned_read() encounters an overlapped stripe, it releases the stripe via raid5_release_stripe() which puts it on the…
Does this matter?
Lower severity and a low EPSS score (0.10%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: md/raid5: fix soft lockup in retry_aligned_read() When retry_aligned_read() encounters an overlapped stripe, it releases the stripe via raid5_release_stripe() which puts it on the lockless released_stripes llist. In the next raid5d loop iteration, release_stripe_list() drains the stripe onto handle_list (since STRIPE_HANDLE is set by the original IO), but retry_aligned_read() runs before handle_active_stripes() and removes the stripe from handle_list via find_get_stripe() -> list_del_init(). This prevents handle_stripe() from ever processing the stripe to resolve the overlap, causing an infinite loop and soft lockup. Fix this by using __release_stripe() with temp_inactive_list instead of raid5_release_stripe() in the failure path, so the stripe does not go through the released_stripes llist. This allows raid5d to break out of its loop, and the overlap will be resolved when the stripe is eventually processed by handle_stripe().
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.10% probability · 1th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/09880592f5a9dc73377d6eb5ac123537b5f8df49Patch
- https://git.kernel.org/stable/c/1985cb3247e87ff6b8ca4bc5f9626f4f51024507Patch
- https://git.kernel.org/stable/c/4166d5234fe8b6c3c7f796a6c198605356c5b355Patch
- https://git.kernel.org/stable/c/66df9f30673db66ac35145820a8e24906069ae57Patch
- https://git.kernel.org/stable/c/7f9f7c697474268d9ef9479df3ddfe7cdcfbbffcPatch
- https://git.kernel.org/stable/c/80fc6ca2cbde018d52e13f305edcd643911bd94bPatch
- https://git.kernel.org/stable/c/883cc33b7af1c448663287f069ef9dfea001e90fPatch
- https://git.kernel.org/stable/c/a9055300e07d9d6800264d3c2560e1d0144689caPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.