Medium 5.5Published May 27, 2026

CVE-2026-46051md/raid5: fix soft lockup in retry_aligned_read()

Updated under an hour ago (Oct 28, 2026, 2:10 AM ET)

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Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 builds before 66df9f30673db66ac35145820a8e24906069ae57; from 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 4166d5234fe8b6c3c7f796a6c198605356c5b355; from 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before a9055300e07d9d6800264d3c2560e1d0144689ca; from 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 09880592f5a9dc73377d6eb5ac123537b5f8df49; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 builds before 80fc6ca2cbde018d52e13f305edcd643911bd94b; from 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 1985cb3247e87ff6b8ca4bc5f9626f4f51024507; from 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 883cc33b7af1c448663287f069ef9dfea001e90f; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 builds before 7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 3.12 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.86; from 6.13 before 6.18.27; from 6.19 before 7.0.4	NVD

References

References

https://git.kernel.org/stable/c/66df9f30673db66ac35145820a8e24906069ae57	patch
https://git.kernel.org/stable/c/4166d5234fe8b6c3c7f796a6c198605356c5b355	patch
https://git.kernel.org/stable/c/a9055300e07d9d6800264d3c2560e1d0144689ca	patch
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://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.