From: Mark Wooding <mdw@distorted.org.uk>
Date: Thu, 14 Sep 2017 12:25:12 +0000 (+0100)
Subject: pathmtu/pathmtu.c: Check against UDP header length, not pointer size.
X-Git-Tag: 1.5.0~41^2~32
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/tripe/commitdiff_plain/0e0da615bb759f1fe1324f6c76a6407ab61b74bf

pathmtu/pathmtu.c: Check against UDP header length, not pointer size.
---

diff --git a/pathmtu/pathmtu.c b/pathmtu/pathmtu.c
index 55702787..4e8f568f 100644
--- a/pathmtu/pathmtu.c
+++ b/pathmtu/pathmtu.c
@@ -616,7 +616,7 @@ static int raw_selproc(void *stv, fd_set *fd_in, struct probestate *ps)
     n -= sizeof(*ip);
 
     udp = (struct udphdr *)(ip + 1);
-    if (n < sizeof(udp) || udp->uh_sport != st->me.sin.sin_port ||
+    if (n < sizeof(*udp) || udp->uh_sport != st->me.sin.sin_port ||
 	udp->uh_dport != st->a.sin.sin_port)
       goto skip_icmp;
     n -= sizeof(*udp);