CVE-2025-22110

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

netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error

It is possible that ctx in nfqnlbuildpacketmessage() could be used before it is properly initialize, which is only initialized by nfqnlgetsksecctx().

This patch corrects this problem by initializing the lsmctx to a safe value when it is declared.

This is similar to the commit 35fcac7a7c25 ("audit: Initialize lsmctx to avoid memory allocation error").