diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2022-12-03 17:46:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:30:47 +0100 |
| commit | 36eedb9a05a765e837d2a328aa8b70754617ceaa (patch) | |
| tree | d953f65309f54e2b2d4bc3a0d95123b409710af7 /net/tipc | |
| parent | 1b6360a093ab8969c91a30bb58b753282e2ced4c (diff) | |
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/tipc')
| -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 8f2ee71c63c6..b653d16ab21f 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1971,7 +1971,9 @@ 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); |