Date: Wed, 20 Jan 2016 19:52:01 +0000 (UTC) From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r294456 - stable/9/lib/libc/string Message-ID: <201601201952.u0KJq1Nf092385@repo.freebsd.org>
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Author: brooks Date: Wed Jan 20 19:52:01 2016 New Revision: 294456 URL: https://svnweb.freebsd.org/changeset/base/294456 Log: MFC r293855: 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: 206177 Submitted by: Alexander Cherepanov <cherepan@mccme.ru> Modified: stable/9/lib/libc/string/wcsncat.c Directory Properties: stable/9/lib/libc/ (props changed) Modified: stable/9/lib/libc/string/wcsncat.c ============================================================================== --- stable/9/lib/libc/string/wcsncat.c Wed Jan 20 19:26:04 2016 (r294455) +++ stable/9/lib/libc/string/wcsncat.c Wed Jan 20 19:52:01 2016 (r294456) @@ -48,7 +48,7 @@ wcsncat(wchar_t * __restrict s1, const w p++; q = p; r = s2; - while (*r && n) { + while (n && *r) { *q++ = *r++; n--; }
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