diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2022-12-03 12:46:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 13:32:03 +0300 |
| commit | 36e248269a16bd872631b76d4f0ec710f84e140d (patch) | |
| tree | d00526c9b42a8e71ede2ca65d981186982a1a5de /net | |
| parent | 93aaa4bb72e388f6a4887541fd3d18b84f1b5ddc (diff) | |
| download | linux-36e248269a16bd872631b76d4f0ec710f84e140d.tar.xz | |
tipc: Fix potential OOB in tipc_link_proto_rcv()
[ Upstream commit 743117a997bbd4840e827295c07e59bcd7f7caa3 ]
Fix the potential risk of OOB if skb_linearize() fails in
tipc_link_proto_rcv().
Fixes: 5cbb28a4bf65 ("tipc: linearize arriving NAME_DISTR and LINK_PROTO buffers")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20221203094635.29024-1-yuehaibing@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/tipc/link.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c index 064fdb8e50e1..c1e56d1f21b3 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2188,7 +2188,9 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, if (tipc_own_addr(l->net) > msg_prevnode(hdr)) l->net_plane = msg_net_plane(hdr); - skb_linearize(skb); + if (skb_linearize(skb)) + goto exit; + hdr = buf_msg(skb); data = msg_data(hdr); |