CVE-2022-48675

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a nested dead lock in the IB/core component of the Linux kernel, specifically as part of the ODP flow. This dead lock can occur when the mmput() function is called while the umem odp->umem mutex is locked, as required by ib umem odp map dma and lock(). This may trigger a dead lock when trying to lock the same mutex in the exit mmap()-> mmu notifier release()->mlx5 ib invalidate range() flow. The problem can be solved by using mmput async() instead, which will execute the exit mmap() flow in another task once the lock is available.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.