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cb181da161
The new function validate_hash_algo() assumed that ima_get_hash_algo()
always return a valid 'enum hash_algo', but it returned the
user-supplied value present in the digital signature without
any bounds checks.
Update ima_get_hash_algo() to always return a valid hash algorithm,
defaulting on 'ima_hash_algo' when the user-supplied value inside
the xattr is invalid.
Signed-off-by: THOBY Simon <Simon.THOBY@viveris.fr>
Reported-by: syzbot+e8bafe7b82c739eaf153@syzkaller.appspotmail.com
Fixes:
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.. | ||
apparmor | ||
bpf | ||
integrity | ||
keys | ||
landlock | ||
loadpin | ||
lockdown | ||
safesetid | ||
selinux | ||
smack | ||
tomoyo | ||
yama | ||
commoncap.c | ||
device_cgroup.c | ||
inode.c | ||
Kconfig | ||
Kconfig.hardening | ||
lsm_audit.c | ||
Makefile | ||
min_addr.c | ||
security.c |