Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

tipc: fix an infoleak in tipc_nl_compat_link_dump

Browse source 
link_info.str is a char array of size 60. Memory after the NULL
byte is not initialized. Sending the whole object out can cause
a leak.

Signed-off-by: Kangjie Lu <kjlu@gatech.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kangjie Lu 2016-06-02 04:04:56 -04:00 committed by David S. Miller
parent ce25d66ad5
commit 5d2be1422e
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
net/tipc/netlink_compat.c
View file

@ -604,7 +604,8 @@ static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
strcpy(link_info.str, nla_data(link[TIPC_NLA_LINK_NAME]));
nla_strlcpy(link_info.str, nla_data(link[TIPC_NLA_LINK_NAME]),
TIPC_MAX_LINK_NAME);
return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
&link_info, sizeof(link_info));