From: László Várady <laszlo.varady@protonmail.com>
Date: Sat, 20 Aug 2022 12:42:38 +0200
Subject: timeutils: fix iterating out of the range of timestamp buffer

Signed-off-by: László Várady <laszlo.varady@protonmail.com>
Signed-off-by: Balazs Scheidler <bazsi77@gmail.com>
Origin: https://github.com/syslog-ng/syslog-ng/commit/73b5c300b8fde5e7a4824baa83a04931279abb37
Bug-Debian: https://security-tracker.debian.org/tracker/CVE-2022-38725
---
 lib/timeutils/scan-timestamp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/timeutils/scan-timestamp.c b/lib/timeutils/scan-timestamp.c
index 2f6a6b7..cb6802d 100644
--- a/lib/timeutils/scan-timestamp.c
+++ b/lib/timeutils/scan-timestamp.c
@@ -328,7 +328,7 @@ __parse_usec(const guchar **data, gint *length)
           src++;
           (*length)--;
         }
-      while (isdigit(*src))
+      while (*length > 0 && isdigit(*src))
         {
           src++;
           (*length)--;