Module Name: src
Committed By: christos
Date: Thu Aug 8 14:38:53 UTC 2019
Modified Files:
src/sys/external/bsd/ipf/netinet: fil.c
Log Message:
PR/54443: Edgar Fu�: ip mistakenly regards UDP packet with checksum field
0xffff as bad
To generate a diff of this commit:
cvs rdiff -u -r1.29 -r1.30 src/sys/external/bsd/ipf/netinet/fil.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/ipf/netinet/fil.c
diff -u src/sys/external/bsd/ipf/netinet/fil.c:1.29 src/sys/external/bsd/ipf/netinet/fil.c:1.30
--- src/sys/external/bsd/ipf/netinet/fil.c:1.29 Fri Jun 28 19:25:12 2019
+++ src/sys/external/bsd/ipf/netinet/fil.c Thu Aug 8 10:38:53 2019
@@ -1,4 +1,4 @@
-/* $NetBSD: fil.c,v 1.29 2019/06/28 23:25:12 christos Exp $ */
+/* $NetBSD: fil.c,v 1.30 2019/08/08 14:38:53 christos Exp $ */
/*
* Copyright (C) 2012 by Darren Reed.
@@ -141,7 +141,7 @@ extern struct timeout ipf_slowtimer_ch;
#if !defined(lint)
#if defined(__NetBSD__)
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fil.c,v 1.29 2019/06/28 23:25:12 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fil.c,v 1.30 2019/08/08 14:38:53 christos Exp $");
#else
static const char sccsid[] = "@(#)fil.c 1.36 6/5/96 (C) 1993-2000 Darren Reed";
static const char rcsid[] = "@(#)Id: fil.c,v 1.1.1.2 2012/07/22 13:45:07 darrenr Exp $";
@@ -6536,8 +6536,11 @@ ipf_checkl4sum(fr_info_t *fin)
/*NOTREACHED*/
}
- if (csump != NULL)
+ if (csump != NULL) {
hdrsum = *csump;
+ if (fin->fin_p == IPPROTO_UDP && hdrsum == 0xffff)
+ hdrsum = 0x0000;
+ }
if (dosum) {
sum = fr_cksum(fin, fin->fin_ip, fin->fin_p, fin->fin_dp);
