mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

cls_rsvp: add sanity check for the packet length 

The packet length should be checked before the packet data is dereferenced.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Changli Gao 2010-08-04 04:55:40 +00:00 committed by David S. Miller
parent 4b95c3d40d
commit 12dc96d167
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
net/sched/cls_rsvp.h
View File

@ -143,9 +143,17 @@ static int rsvp_classify(struct sk_buff *skb, struct tcf_proto *tp,
u8 tunnelid = 0;
u8 *xprt;
#if RSVP_DST_LEN == 4
struct ipv6hdr *nhptr = ipv6_hdr(skb);
struct ipv6hdr *nhptr;
if (!pskb_network_may_pull(skb, sizeof(*nhptr)))
return -1;
nhptr = ipv6_hdr(skb);
#else
struct iphdr *nhptr = ip_hdr(skb);
struct iphdr *nhptr;
if (!pskb_network_may_pull(skb, sizeof(*nhptr)))
return -1;
nhptr = ip_hdr(skb);
#endif
restart: