openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ip6mr: Add sizeof verification to MRT6_ASSERT and MT6_PIM 

Verify the length of the user-space arguments.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joe Perches 2012-11-25 18:26:34 +00:00 committed by David S. Miller
parent c91f6df2db
commit 03f52a0a55
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/ipv6/ip6mr.c
View File

@ -1646,6 +1646,9 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_ASSERT:
{
int v;
if (optlen != sizeof(v))
return -EINVAL;
if (get_user(v, (int __user *)optval))
return -EFAULT;
mrt->mroute_do_assert = v;
@ -1656,6 +1659,9 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns
case MRT6_PIM:
{
int v;
if (optlen != sizeof(v))
return -EINVAL;
if (get_user(v, (int __user *)optval))
return -EFAULT;
v = !!v;