From 9ccd4722cc74bacde76215a19de81cebf3276ea5 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 30 May 2012 22:46:07 +0200
Subject: [PATCH] journal: don't allow adding invalid matches to the context
 (cherry picked from commit
 d94117a93c0a8431de5c765f21a97f6eb32580da)

---
 src/journal/sd-journal.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/journal/sd-journal.c b/src/journal/sd-journal.c
index 6ed1e25..e80c6cb 100644
--- a/src/journal/sd-journal.c
+++ b/src/journal/sd-journal.c
@@ -115,7 +115,11 @@ _public_ int sd_journal_add_match(sd_journal *j, const void *data, size_t size)
                 return -EINVAL;
         if (!data)
                 return -EINVAL;
-        if (size <= 0)
+        if (size <= 1)
+                return -EINVAL;
+        if (!memchr(data, '=', size))
+                return -EINVAL;
+        if (*(char*) data == '=')
                 return -EINVAL;
 
         /* FIXME: iterating with multiple matches is currently