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Fix buffer overrun.

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MFC after:	1 day
This commit is contained in:
Hiroki Sato 2014-10-11 20:46:06 +00:00
parent 37c7d4443c
commit e58fde506c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=272961
1 changed files with 2 additions and 1 deletions
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3
usr.sbin/rtsold/rtsol.c
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@ -933,7 +933,8 @@ dname_labeldec(char *dst, size_t dlen, const char *src)
dst_origin = dst;
memset(dst, '\0', dlen);
while (src && (len = (uint8_t)(*src++) & 0x3f) &&
(src + len) <= src_last) {
(src + len) <= src_last &&
(dst - dst_origin < (ssize_t)dlen)) {
if (dst != dst_origin)
*dst++ = '.';
warnmsg(LOG_DEBUG, __func__, "labellen = %zd", len);