CVE-2025-37861

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.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• https://git.kernel.org/stable/c/65ba18c84dbd03afe9b38c06c151239d97a09834
• https://git.kernel.org/stable/c/75b67dca4195e11ccf966a704787b2aa2754a457
• https://git.kernel.org/stable/c/8d310d66e2b0f5f9f709764641647e8a3a4924fa
• https://git.kernel.org/stable/c/f195fc060c738d303a21fae146dbf85e1595fb4c