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| author | Lorenzo Bianconi <lorenzo.bianconi@redhat.com> | 2019-04-09 11:47:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 09:34:00 +0200 |
| commit | b1aaee5a97c9d6557bec13cf22d3db888c91509c (patch) | |
| tree | be24c72434eedccfc383c5f9789b937c0ae20a7c /net/ipv4/tcp_input.c | |
| parent | dc20066a631c4cba287cd3a9920718a6e6658a76 (diff) | |
net: fou: do not use guehdr after iptunnel_pull_offloads in gue_udp_recv
[ Upstream commit 988dc4a9a3b66be75b30405a5494faf0dc7cffb6 ]
gue tunnels run iptunnel_pull_offloads on received skbs. This can
determine a possible use-after-free accessing guehdr pointer since
the packet will be 'uncloned' running pskb_expand_head if it is a
cloned gso skb (e.g if the packet has been sent though a veth device)
Fixes: a09a4c8dd1ec ("tunnels: Remove encapsulation offloads on decap")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions