netdev - [PATCH net] netlink: mmap: fix status setting in skb destructor

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 for Android: free password hash cracker in your pocket

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

Date:	Thu, 20 Aug 2015 16:07:33 +0900
From:	Ken-ichirou MATSUZAWA <chamaken@...il.com>
To:	netdev@...r.kernel.org
Cc:	David Miller <davem@...emloft.net>,
	Daniel Borkmann <daniel@...earbox.net>, fw@...len.de
Subject: [PATCH net] netlink: mmap: fix status setting in skb destructor

I don't know the intension of setting VALID status in the skb
destructor. But I think it need to be set UNUSED status in case of
error then release skb, or rx ring might be filled with RESERVED
frames.

Signed-off-by: Ken-ichirou MATSUZAWA <chamas@...dion.ne.jp>
---
 net/netlink/af_netlink.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index e6134f4..85ccd8b 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -864,7 +864,7 @@ static void netlink_skb_destructor(struct sk_buff *skb)
 		} else {
 			if (!(NETLINK_CB(skb).flags & NETLINK_SKB_DELIVERED)) {
 				hdr->nm_len = 0;
-				netlink_set_status(hdr, NL_MMAP_STATUS_VALID);
+				netlink_set_status(hdr, NL_MMAP_STATUS_UNUSED);
 			}
 			ring = &nlk_sk(sk)->rx_ring;
 		}
-- 
1.7.10.4

--
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