lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Fri, 18 Apr 2008 18:32:46 +0800
From:	Wang Chen <wangchen@...fujitsu.com>
To:	YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>,
	"David S. Miller" <davem@...emloft.net>,
	NETDEV <netdev@...r.kernel.org>
Subject: [PATCH] RAW6: Do not allow set IPV6_CHECKSUM for ICMPv6 socket

As RFC3542 mentions: An attempt to set IPV6_CHECKSUM for an
ICMPv6 socket will fail.
Add a check for that in do_rawv6_setsockopt().

Signed-off-by: Wang Chen <wangchen@...fujitsu.com>
---
 net/ipv6/raw.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 0a6fbc1..c4cc1f9 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -994,6 +994,11 @@ static int do_rawv6_setsockopt(struct sock *sk, int level, int optname,
 
 	switch (optname) {
 		case IPV6_CHECKSUM:
+			/* RFC3542: An attempt to set IPV6_CHECKSUM for an
+			 * ICMPv6 socket will fail.
+			 */
+			if (inet_sk(sk)->num == IPPROTO_ICMPV6)
+				return(-EINVAL);
 			/* You may get strange result with a positive odd offset;
 			   RFC2292bis agrees with me. */
 			if (val > 0 && (val&1))
-- 
1.5.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists