From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Mon, 11 Jun 2018 03:31:02 +0000 (+0900)
Subject: util-lib: reject too long path for timedate_is_valid()
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=3cec34a443c76e06a21f0be01ce9eac936c8a6d4;p=elogind.git

util-lib: reject too long path for timedate_is_valid()

This should fix https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=8827.
---

diff --git a/src/basic/time-util.c b/src/basic/time-util.c
index 71d6179ef..2e465296f 100644
--- a/src/basic/time-util.c
+++ b/src/basic/time-util.c
@@ -1326,6 +1326,9 @@ bool timezone_is_valid(const char *name, int log_level) {
         if (slash)
                 return false;
 
+        if (p - name >= PATH_MAX)
+                return false;
+
         t = strjoina("/usr/share/zoneinfo/", name);
 
         fd = open(t, O_RDONLY|O_CLOEXEC);