CVE-2025-22057 net: decrease cached dst counters in dst_release

In the Linux kernel, the following vulnerability has been resolved: net: decrease cached dst counters in dstrelease Upstream fix ac888d58869b "net: do not delay dstentriesadd in dstrelease" moved decrementing the dst count from dstdestroy to dstrelease to avoid accessing already freed data in cas...

CVE-2025-22057

CVE-2025-22057 : In the Linux kernel, the fix for an issue with decreasing cached dst counters in dst_release was incomplete when CONFIG_DST_CACHE is enabled and OvS tunnels are used, potentially leading to a kernel NULL page fault during dst cache destruction. The upstream patch moves the decrem...