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Fix validation of overly-long IPv6 addresses.

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The inet/cidr types sometimes failed to reject IPv6 inputs with too many
colon-separated fields, instead translating them to '::/0'.  This is the
result of a thinko in the original ISC code that seems to be as yet
unreported elsewhere.  Per bug #14198 from Stefan Kaltenbrunner.

Report: <20160616182222.5798.959@wrigleys.postgresql.org>
This commit is contained in:
Tom Lane 2016-06-16 17:16:32 -04:00
parent 4f5995dd98
commit a41b14f94a
1 changed files with 1 additions and 1 deletions
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2
src/backend/utils/adt/inet_net_pton.c
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@ -496,7 +496,7 @@ inet_cidr_pton_ipv6(const char *src, u_char *dst, size_t size)
else if (*src == '\0')
goto enoent;
if (tp + NS_INT16SZ > endp)
return (0);
goto enoent;
*tp++ = (u_char) (val >> 8) & 0xff;
*tp++ = (u_char) val & 0xff;
saw_xdigit = 0;