tree e161c23be7e71410dd23f33888dfe7bf4cde35d2
parent b4d281f962be74adfbae9d7bead6a7352033342c
author Mikhail Novosyolov <m.novosyolov@rosalinux.ru> 1664117168 +0300
committer Lucas De Marchi <lucas.de.marchi@gmail.com> 1664805581 -0700

libkmod: do not crash on unknown signature algorithm

Example kernel module:
https://file-store.rosalinux.ru/download/7281f97e0c04c0f818ad3f936706f4a407e8dc7e
(/lib/modules/5.15.67-generic-1rosa2021.1-x86_64/kernel/drivers/usb/host/xhci-pci.ko.zst)
It is signed with Streebog 512.

libkmod v30 crashed in libkmod-module.c:2413 in this code:

n = kmod_module_info_append(list,
	"sig_hashalgo", strlen("sig_hashalgo"),
	sig_info.hash_algo, strlen(sig_info.hash_algo));

because strlen() got null.