CVE-2022-48930

In the Linux kernel, the following vulnerability has been resolved:

RDMA/ib_srp: Fix a deadlock

Remove the flush_workqueue(system_long_wq) call since flushing system_long_wq is deadlock-prone and since that call is redundant with a preceding cancel_work_sync()

Weakness

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

Affected Software

Extended Description

Locking is a type of synchronization behavior that ensures that multiple independently-operating processes or threads do not interfere with each other when accessing the same resource. All processes/threads are expected to follow the same steps for locking. If these steps are not followed precisely - or if no locking is done at all - then another process/thread could modify the shared resource in a way that is not visible or predictable to the original process. This can lead to data or memory corruption, denial of service, etc.

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/25.html
• https://cwe.mitre.org/data/definitions/26.html
• https://cwe.mitre.org/data/definitions/27.html

References

• https://git.kernel.org/stable/c/081bdc9fe05bb23248f5effb6f811da3da4b8252
• https://git.kernel.org/stable/c/4752fafb461821f8c8581090c923ababba68c5bd
• https://git.kernel.org/stable/c/8cc342508f9e7fdccd2e9758ae9d52aff72dab7f
• https://git.kernel.org/stable/c/901206f71e6ad2b2e7accefc5199a438d173c25f
• https://git.kernel.org/stable/c/98d056603ce55ceb90631b3927151c190dfb1b27
• https://git.kernel.org/stable/c/99eb8d694174c777558dc902d575d1997d5ca650
• https://git.kernel.org/stable/c/c8b56e51aa91b8e7df3a98388dce3fdabd15c1d4
• https://git.kernel.org/stable/c/d7997d19dfa7001ca41e971cd9efd091bb195b51