The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.13
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=19d1532a187669ce86d5a2696eb7275310070793
lists.debian.org/debian-lts-announce/2021/12/msg00012.html
security.netapp.com/advisory/ntap-20211104-0002/
www.youtube.com/watch?v=d5f9xLK8Vhw