iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

netlink: fix uninit-value in netlink_sendmsg

Browse Source 
commit 6091f09c2f79730d895149bcfe3d66140288cd0e upstream.

syzbot reported :

BUG: KMSAN: uninit-value in ffs arch/x86/include/asm/bitops.h:432 [inline]
BUG: KMSAN: uninit-value in netlink_sendmsg+0xb26/0x1310 net/netlink/af_netlink.c:1851

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eric Dumazet 2018-04-07 13:42:37 -07:00 committed by Greg Kroah-Hartman
parent 83231e0aae
commit bab5c357a1
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
net/netlink/af_netlink.c
View File

@ -1795,6 +1795,8 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
if (msg->msg_namelen) {
err = -EINVAL;
if (msg->msg_namelen < sizeof(struct sockaddr_nl))
goto out;
if (addr->nl_family != AF_NETLINK)
goto out;
dst_portid = addr->nl_pid;