kernel: nfs: fix panic when nfs4_ff_layout_prepare_ds() fails

A vulnerability was found in the fflayoutcancelio function in the Linux kernel. Improper error checking with the mirrords structure fails to check if it is NULL, leading to a potential NULL pointer dereference. This issue could lead to crashes...

PT-2024-21543

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The issue is related to a NULL pointer dereference in the ff layout cancel io function, which can cause a panic when nfs4 ff layout prepare ds fails. The problem arises from an...