netdev - [PATCH 4/6] vxlan: Fail build if VXLAN header is misdefined

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 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed,  7 Jan 2015 03:05:39 +0100
From:	Thomas Graf <tgraf@...g.ch>
To:	davem@...emloft.net, jesse@...ira.com, stephen@...workplumber.org,
	pshelar@...ira.com
Cc:	netdev@...r.kernel.org, dev@...nvswitch.org
Subject: [PATCH 4/6] vxlan: Fail build if VXLAN header is misdefined

Due to the complexity of struct vxlanhdr, protect against unwanted
and undesired changes by failing the build if the size of the struct
changes.

Signed-off-by: Thomas Graf <tgraf@...g.ch>
---
 drivers/net/vxlan.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 2b75c62..293d524 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2842,6 +2842,8 @@ static int __init vxlan_init_module(void)
 {
 	int rc;
 
+	BUILD_BUG_ON(sizeof(struct vxlanhdr) != 8);
+
 	vxlan_wq = alloc_workqueue("vxlan", 0, 0);
 	if (!vxlan_wq)
 		return -ENOMEM;
-- 
1.9.3

--
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