protobuf-c/backport-0002-Fix-regression-with-zero-length-messages-introduced-.patch
mengwenhua a2601a3b00 fix unsigned integer overflow
Signed-off-by: mengwenhua <mengwenhua@xfusion.com>
2023-01-07 08:40:41 +08:00

29 lines
942 B
Diff

From 0d1fd124a4e0a07b524989f6e64410ff648fba61 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Thu, 9 Jun 2022 07:34:55 -0600
Subject: [PATCH 2/2] Fix regression with zero-length messages introduced in
protobuf-c PR 500.
[edmonds: Import bugfix from
https://github.com/sudo-project/sudo/commit/b6a6451482a3ff5e30f43ef888159d4b0d39143b.patch.]
---
protobuf-c/protobuf-c.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/protobuf-c/protobuf-c.c b/protobuf-c/protobuf-c.c
index ec2d40a..448f3e8 100644
--- a/protobuf-c/protobuf-c.c
+++ b/protobuf-c/protobuf-c.c
@@ -2603,7 +2603,7 @@ parse_required_member(ScannedMember *scanned_member,
return FALSE;
def_mess = scanned_member->field->default_value;
- if (len > pref_len)
+ if (len >= pref_len)
subm = protobuf_c_message_unpack(scanned_member->field->descriptor,
allocator,
len - pref_len,
--
2.37.3.windows.1