buildroot/package/zlog/0001-Fix-stack-buffer-overflow-at-zlog_conf_build_with_file.patch

From a5be8b3a8ddc498de4ad041757285136a55d97e3 Mon Sep 17 00:00:00 2001
From: XiangfeiCH <chenthrone@163.com>
Date: Tue, 12 Apr 2022 00:13:35 +0800
Subject: [PATCH] Fix stack-buffer-overflow at zlog_conf_build_with_file

[Retrieved from:
https://github.com/HardySimpson/zlog/commit/a5be8b3a8ddc498de4ad041757285136a55d97e3]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 src/conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/conf.c b/src/conf.c
index 0f862fa..9a4cb75 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -305,7 +305,7 @@ static int zlog_conf_build_with_file(zlog_conf_t * a_conf)
 				/* Oops the buffer is full - what now? */
 				pline = line;
 			} else {
-				for (p--; isspace((int)*p); --p)
+				for (p--; p >= line && isspace((int)*p); --p)
 					/*EMPTY*/;
 				p++;
 				*p = 0;