Medium severity · published May 27, 2026
CVE-2026-46051
md/raid5: fix soft lockup in retry_aligned_read()
5.5
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 1% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
3.12 before 5.10.258; 5.11 before 5.15.209; 5.16 before 6.1.175; 6.2 before 6.6.140; 6.7 before 6.12.86; 6.13 before 6.18.27; +1 more · source: NVD
LI
Linux · Linux
773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 66df9f30673db66ac35145820a8e24906069ae57; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 4166d5234fe8b6c3c7f796a6c198605356c5b355; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before a9055300e07d9d6800264d3c2560e1d0144689ca; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 09880592f5a9dc73377d6eb5ac123537b5f8df49; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 80fc6ca2cbde018d52e13f305edcd643911bd94b; 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 1985cb3247e87ff6b8ca4bc5f9626f4f51024507; +3 more · source: vendor