TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[PATCH] Fix DoS in netlink_rcv_skb() (CVE-2006-0035)

Browse Source 
Sanity check nlmsg_len during netlink_rcv_skb.  An nlmsg_len == 0 can
cause infinite loop in kernel, effectively DoSing machine.  Noted by
Martin Murray.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Murray
2006-01-10 21:02:29 -08:00
committed by Chris Wright
parent 15ee2e0694
commit 7abeff5a23
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/netlink/af_netlink.c
+1 -1
View File
@@ -1422,7 +1422,7 @@ static int netlink_rcv_skb(struct sk_buff *skb, int (*cb)(struct sk_buff *,
while (skb->len >= nlmsg_total_size(0)) {
nlh = (struct nlmsghdr *) skb->data;
if (skb->len < nlh->nlmsg_len)
if (nlh->nlmsg_len < NLMSG_HDRLEN || skb->len < nlh->nlmsg_len)
return 0;
total_len = min(NLMSG_ALIGN(nlh->nlmsg_len), skb->len);