File mokutil-check-corrupted-key-list.patch of Package mokutil.24584
From e2e549583543bb0d607670b25af75821f55d5538 Mon Sep 17 00:00:00 2001
From: Gary Ching-Pang Lin <glin@suse.com>
Date: Thu, 10 Apr 2014 12:36:29 +0800
Subject: [PATCH] Check corrupted key list
Signed-off-by: Gary Ching-Pang Lin <glin@suse.com>
---
src/mokutil.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/mokutil.c b/src/mokutil.c
index eb563ca..6792823 100644
--- a/src/mokutil.c
+++ b/src/mokutil.c
@@ -237,6 +237,14 @@ build_mok_list (void *data, unsigned long data_size, uint32_t *mok_num)
unsigned long count = 0;
while ((dbsize > 0) && (dbsize >= CertList->SignatureListSize)) {
+ if (CertList->SignatureListSize == 0 ||
+ CertList->SignatureListSize <= CertList->SignatureSize) {
+ fprintf (stderr, "Corrupted signature list\n");
+ if (list)
+ free (list);
+ return NULL;
+ }
+
if ((efi_guidcmp (CertList->SignatureType, EfiCertX509Guid) != 0) &&
(efi_guidcmp (CertList->SignatureType, EfiHashSha1Guid) != 0) &&
(efi_guidcmp (CertList->SignatureType, EfiHashSha224Guid) != 0) &&
--
1.8.4.5
