5.5

CVE-2026-46051

md/raid5: fix soft lockup in retry_aligned_read()

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().
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
LinuxLinux Kernel Version >= 3.12 < 5.10.258
LinuxLinux Kernel Version >= 5.11 < 5.15.209
LinuxLinux Kernel Version >= 5.16 < 6.1.175
LinuxLinux Kernel Version >= 6.2 < 6.6.140
LinuxLinux Kernel Version >= 6.7 < 6.12.86
LinuxLinux Kernel Version >= 6.13 < 6.18.27
LinuxLinux Kernel Version >= 6.19 < 7.0.4
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.1% 0.008
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://git.kernel.org/stable/c/09880592f5a9dc73377d6eb5ac123537b5f8df49
Patch
https://git.kernel.org/stable/c/80fc6ca2cbde018d52e13f305edcd643911bd94b
Patch
https://git.kernel.org/stable/c/1985cb3247e87ff6b8ca4bc5f9626f4f51024507
Patch
https://git.kernel.org/stable/c/883cc33b7af1c448663287f069ef9dfea001e90f
Patch
https://git.kernel.org/stable/c/7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc
Patch
https://git.kernel.org/stable/c/4166d5234fe8b6c3c7f796a6c198605356c5b355
Patch
https://git.kernel.org/stable/c/66df9f30673db66ac35145820a8e24906069ae57
Patch
https://git.kernel.org/stable/c/a9055300e07d9d6800264d3c2560e1d0144689ca
Patch