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| author | YueHaibing <yuehaibing@huawei.com> | 2022-12-03 17:46:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:26:15 +0100 |
| commit | abf037ca3025b30dc20d97a40d922a4e0a7cafe3 (patch) | |
| tree | 6d9a5cdb8f4297a59aecb0f0b55813bb5c3ad154 /net | |
| parent | 8067cd244cea2c332f8326842fd10158fa2cb64f (diff) | |
| download | linux-stable-abf037ca3025b30dc20d97a40d922a4e0a7cafe3.tar.gz linux-stable-abf037ca3025b30dc20d97a40d922a4e0a7cafe3.tar.bz2 linux-stable-abf037ca3025b30dc20d97a40d922a4e0a7cafe3.zip | |
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 d3017811b67a..edcc768a17ce 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1477,7 +1477,9 @@ 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); |