commit d3bfe84129f6 ("certs: Add a secondary system keyring that can be added to dynamically")
split of .system_keyring into .builtin_trusted_keys and
.secondary_trusted_keys broke kexec, thereby preventing kernels signed by
keys which are now in the secondary keyring from being kexec'd.
Fix this by passing VERIFY_USE_SECONDARY_KEYRING to
verify_pefile_signature().
Cherry-picked from
commit ea93102f3224 ("Fix kexec forbidding kernels signed with keys in the secondary keyring to boot")
Fixes: 732b7b93d849 ("arm64: kexec_file: add kernel signature verification support")
Cc: kexec@xxxxxxxxxxxxxxxxxxx
Cc: keyrings@xxxxxxxxxxxxxxx
Cc: linux-security-module@xxxxxxxxxxxxxxx
Cc: stable@xxxxxxxxxx
Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx>
---
arch/arm64/kernel/kexec_image.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/kexec_image.c b/arch/arm64/kernel/kexec_image.c
index 9ec34690e255..1fbf2ee7c005 100644
--- a/arch/arm64/kernel/kexec_image.c
+++ b/arch/arm64/kernel/kexec_image.c
@@ -133,7 +133,8 @@ static void *image_load(struct kimage *image,
#ifdef CONFIG_KEXEC_IMAGE_VERIFY_SIG
static int image_verify_sig(const char *kernel, unsigned long kernel_len)
{
- return verify_pefile_signature(kernel, kernel_len, NULL,
+ return verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_SECONDARY_KEYRING,
VERIFYING_KEXEC_PE_SIGNATURE);
}
#endif
--
2.31.1
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