diff options
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/nameser/ns_name.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/libc/nameser/ns_name.c b/lib/libc/nameser/ns_name.c index 1f37406..5b8a8cb 100644 --- a/lib/libc/nameser/ns_name.c +++ b/lib/libc/nameser/ns_name.c @@ -463,11 +463,12 @@ ns_name_unpack2(const u_char *msg, const u_char *eom, const u_char *src, } if (len < 0) len = srcp - src + 1; - srcp = msg + (((n & 0x3f) << 8) | (*srcp & 0xff)); - if (srcp < msg || srcp >= eom) { /*%< Out of range. */ + l = ((n & 0x3f) << 8) | (*srcp & 0xff); + if (l >= eom - msg) { /*%< Out of range. */ errno = EMSGSIZE; return (-1); } + srcp = msg + l; checked += 2; /* * Check for loops in the compressed name; |
