CVE-2025-37861: scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-09 · updated 2026-10-30
Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Synchronous access b/w reset and tm thread for reply queue When the task management thread processes reply queues while the reset thread resets them, the task management thread accesses an invalid queue ID (0xFFFF), set by the reset thread, which points to unallocated memory, causing a crash. Add flag 'io_admin_reset_sync' to synchronize access between the reset, I/O, and admin threads. Before a reset, the reset handler sets this flag to block I/O and admin processing threads. If any thread bypasses the initial check, the reset thread waits up to 10 seconds for processing to finish. If the wait exceeds 10 seconds, the controller is marked as unrecoverable.

Affected products

Linux kernel: from 5.14 before 6.12.24; from 6.13 before 6.13.12; from 6.14 before 6.14.3 — fixed in 6.12.24, 6.13.12, 6.14.3
Linux: 5.14 — fixed in 6.15

How to fix

Upgrade to a fixed version: Linux kernel 6.12.24, 6.13.12, 6.14.3; Linux 6.15. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-37861 or the next vulnerability affects your stack