CVE-2021-45486
In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small.
Date published : 2021-12-24
https://arxiv.org/pdf/2112.09604.pdf
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4