[PATCH] discover/boot: abort kexec on any error from validation

Brett Grandbois brett.grandbois at opengear.com
Wed May 16 13:23:49 AEST 2018


gpg_validate_boot_files() can return error codes for a variety of
reasons but kexec_load only aborts for signature or decryption failure.
In any other failure case like unable to open LOCKDOWN_FILE or do the
secure copy the validation is bypassed by an early return but kexec_load
does not abort.

Signed-off-by: Brett Grandbois <brett.grandbois at opengear.com>
---
 discover/boot.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/discover/boot.c b/discover/boot.c
index 0da40e3..09e42f2 100644
--- a/discover/boot.c
+++ b/discover/boot.c
@@ -76,13 +76,13 @@ static int kexec_load(struct boot_task *boot_task)
 		if (result == KEXEC_LOAD_DECRYPTION_FALURE) {
 			pb_log("%s: Aborting kexec due to"
 				" decryption failure\n", __func__);
-			goto abort_kexec;
 		}
 		if (result == KEXEC_LOAD_SIGNATURE_FAILURE) {
 			pb_log("%s: Aborting kexec due to signature"
 				" verification failure\n", __func__);
-			goto abort_kexec;
 		}
+
+		goto abort_kexec;
 	}
 
 	const char* local_initrd = (boot_task->local_initrd_override) ?
-- 
2.7.4



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