diff options
| author | YueHaibing <yuehaibing@huawei.com> | 2022-12-03 17:46:35 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-14 11:24:35 +0100 |
| commit | 62ae69ea7be897d75022999378477b2a94ee90b4 (patch) | |
| tree | bbc9a3f3a314e9f0af6ffc6f575a9e3fde181f62 /net | |
| parent | 179499e7a240b2ef590f05eb379c810c26bbc8a4 (diff) | |
| download | linux-stable-62ae69ea7be897d75022999378477b2a94ee90b4.tar.gz linux-stable-62ae69ea7be897d75022999378477b2a94ee90b4.tar.bz2 linux-stable-62ae69ea7be897d75022999378477b2a94ee90b4.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 2c1350e811e2..5c063a548093 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1456,7 +1456,9 @@ 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); |