title: Red Hat Security Advisory: grub2, mokutil, shim, and shim-unsigned-x64 security update
description: grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap grub2: Crafted PNG image may lead to out-of-bound write during huffman table handling grub2: Crafted JPEG image can lead to buffer underflow write in the heap grub2: Integer underflow in grub_net_recv_ip4_packets grub2: Out-of-bound write when handling split HTTP headers grub2: shim_lock verifier allows non-kernel files to be loaded grub2: use-after-free in grub_cmd_chainloader() shim: Buffer overflow when loading crafted EFI images
cpes: cpe:/a:redhat:enterprise_linux:9::crb cpe:/o:redhat:enterprise_linux:9::baseos