From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 26 Mar 2019 16:22:18 +0000 (+0100)
Subject: terminal-util: add paranoid overflow check
X-Git-Tag: v242-rc1~56^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F12113%2Fhead;p=thirdparty%2Fsystemd.git

terminal-util: add paranoid overflow check
---

diff --git a/src/basic/terminal-util.c b/src/basic/terminal-util.c
index a1a789984f0..b692c52e590 100644
--- a/src/basic/terminal-util.c
+++ b/src/basic/terminal-util.c
@@ -1041,6 +1041,10 @@ int ptsname_malloc(int fd, char **ret) {
                 }
 
                 free(c);
+
+                if (l > SIZE_MAX / 2)
+                        return -ENOMEM;
+
                 l *= 2;
         }
 }