Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 66df9f30673db66ac35145820a8e24906069ae57; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 4166d5234fe8b6c3c7f796a6c198605356c5b355; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before a9055300e07d9d6800264d3c2560e1d0144689ca; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 09880592f5a9dc73377d6eb5ac123537b5f8df49; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 80fc6ca2cbde018d52e13f305edcd643911bd94b; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 1985cb3247e87ff6b8ca4bc5f9626f4f51024507; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 883cc33b7af1c448663287f069ef9dfea001e90f; affected 773ca82fa1ee58dd1bf88b6a5ca385ec83a2cac6 before 7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc |
| Linux / Linux | affected 3.12; unaffected 0 before 3.12; unaffected 5.10.258 through 5.10.*; unaffected 5.15.209 through 5.15.*; unaffected 6.1.175 through 6.1.*; unaffected 6.6.140 through 6.6.*; unaffected 6.12.86 through 6.12.*; unaffected 6.18.27 through 6.18.*; unaffected 7.0.4 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/66df9f30673db66ac35145820a8e24906069ae57
- https://git.kernel.org/stable/c/4166d5234fe8b6c3c7f796a6c198605356c5b355
- https://git.kernel.org/stable/c/a9055300e07d9d6800264d3c2560e1d0144689ca
- https://git.kernel.org/stable/c/09880592f5a9dc73377d6eb5ac123537b5f8df49
- https://git.kernel.org/stable/c/80fc6ca2cbde018d52e13f305edcd643911bd94b
- https://git.kernel.org/stable/c/1985cb3247e87ff6b8ca4bc5f9626f4f51024507
- https://git.kernel.org/stable/c/883cc33b7af1c448663287f069ef9dfea001e90f
- https://git.kernel.org/stable/c/7f9f7c697474268d9ef9479df3ddfe7cdcfbbffc
ADP enrichment
No English description supplied.