svn commit: r294538 - stable/8/lib/libc/string
Brooks Davis
brooks at FreeBSD.org
Fri Jan 22 00:13:19 UTC 2016
Author: brooks
Date: Fri Jan 22 00:13:18 2016
New Revision: 294538
URL: https://svnweb.freebsd.org/changeset/base/294538
Log:
MFC r293856:
Avoid reading pass the end of the source buffer when it is not NUL
terminated.
If this buffer is adjacent to an unmapped page or a version of C with
bounds checked is used this may result in a crash.
PR: 206178
Submitted by: Alexander Cherepanov <cherepan at mccme.ru>
Requested by: danfe
Modified:
stable/8/lib/libc/string/wcslcat.c
Directory Properties:
stable/8/lib/libc/ (props changed)
Modified: stable/8/lib/libc/string/wcslcat.c
==============================================================================
--- stable/8/lib/libc/string/wcslcat.c Fri Jan 22 00:08:16 2016 (r294537)
+++ stable/8/lib/libc/string/wcslcat.c Fri Jan 22 00:13:18 2016 (r294538)
@@ -54,7 +54,7 @@ wcslcat(wchar_t *dst, const wchar_t *src
size_t dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
- while (*d != '\0' && n-- != 0)
+ while (n-- != 0 && *d != '\0')
d++;
dlen = d - dst;
n = siz - dlen;
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