From 63b6a08ce2467b8e230e7a4ecb3e1ddf1b48851c Mon Sep 17 00:00:00 2001 From: Markus Stoff Date: Tue, 18 May 2021 22:35:33 +0200 Subject: ng_parse: IP address parsing in netgraph eating too many characters Once the final component of the IP address has been parsed, the offset on the input must not be advanced, as this would remove an unparsed character from the input. Submitted by: Markus Stoff Reviewed by: donner MFC after: 3 weeks Differential Revision: https://reviews.freebsd.org/D26489 --- sys/netgraph/ng_parse.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/sys/netgraph/ng_parse.c b/sys/netgraph/ng_parse.c index 8050edbba562..c3c2126bdef5 100644 --- a/sys/netgraph/ng_parse.c +++ b/sys/netgraph/ng_parse.c @@ -960,9 +960,11 @@ ng_ipaddr_parse(const struct ng_parse_type *type, if ((error = ng_int8_parse(&ng_parse_int8_type, s, off, start, buf + i, buflen)) != 0) return (error); - if (i < 3 && s[*off] != '.') - return (EINVAL); - (*off)++; + if (i < 3) { + if (s[*off] != '.') + return (EINVAL); + (*off)++; + } } *buflen = 4; return (0); -- cgit v1.2.3