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| author | YueHaibing <yuehaibing@huawei.com> | 2022-12-03 17:46:35 +0800 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2022-12-06 12:58:38 +0100 |
| commit | 743117a997bbd4840e827295c07e59bcd7f7caa3 (patch) | |
| tree | 767505b5dc9fe0c1c932beb586351ad031079a8e /net/tipc/link.c | |
| parent | 433c07a13f59856e4585e89e86b7d4cc59348fab (diff) | |
| download | linux-743117a997bbd4840e827295c07e59bcd7f7caa3.tar.gz linux-743117a997bbd4840e827295c07e59bcd7f7caa3.tar.bz2 linux-743117a997bbd4840e827295c07e59bcd7f7caa3.zip | |
tipc: Fix potential OOB in tipc_link_proto_rcv()
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>
Diffstat (limited to 'net/tipc/link.c')
| -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 e260c0d557f5..b3ce24823f50 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -2224,7 +2224,9 @@ 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); |