From 56f881c5eaa3d8c02c96607c4b9e4eaf959a044d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=C3=A1szl=C3=B3=20V=C3=A1rady?=
 <laszlo.varady@protonmail.com>
Date: Sat, 20 Aug 2022 14:30:51 +0200
Subject: [PATCH] timeutils: fix out-of-bounds reading of data buffer
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Signed-off-by: László Várady <laszlo.varady@protonmail.com>
---
 lib/timeutils/scan-timestamp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/timeutils/scan-timestamp.c b/lib/timeutils/scan-timestamp.c
index 125264677b..c00d8e6a96 100644
--- a/lib/timeutils/scan-timestamp.c
+++ b/lib/timeutils/scan-timestamp.c
@@ -431,7 +431,7 @@ __parse_bsd_timestamp(const guchar **data, gint *length, WallClockTime *wct)
       if (!scan_pix_timestamp((const gchar **) &src, &left, wct))
         return FALSE;
 
-      if (*src == ':')
+      if (left && *src == ':')
         {
           src++;
           left--;
@@ -482,7 +482,7 @@ scan_rfc3164_timestamp(const guchar **data, gint *length, WallClockTime *wct)
    * looking at you, skip that as well, so we can reliably detect IPv6
    * addresses as hostnames, which would be using ":" as well. */
 
-  if (*src == ':')
+  if (left && *src == ':')
     {
       ++src;
       --left;