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Merge branch 'vxlan-geneve-linear'

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Stefano Brivio says:

====================
Don't assume linear buffers in error handlers for VXLAN and GENEVE

Guillaume noticed the same issue fixed by commit 26fc181e6cac ("fou, fou6:
do not assume linear skbs") for fou and fou6 is also present in VXLAN and
GENEVE error handlers: we can't assume linear buffers there, we need to
use pskb_may_pull() instead.
====================

Acked-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-06-11 12:07:33 -07:00
commit 93c65f83f2
2 changed files with 2 additions and 2 deletions
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2
drivers/net/geneve.c
View File

@ -395,7 +395,7 @@ static int geneve_udp_encap_err_lookup(struct sock *sk, struct sk_buff *skb)
u8 zero_vni[3] = { 0 };
u8 *vni = zero_vni;
if (skb->len < GENEVE_BASE_HLEN)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + GENEVE_BASE_HLEN))
return -EINVAL;
geneveh = geneve_hdr(skb);

2
drivers/net/vxlan.c
View File

@ -1766,7 +1766,7 @@ static int vxlan_err_lookup(struct sock *sk, struct sk_buff *skb)
struct vxlanhdr *hdr;
__be32 vni;
if (skb->len < VXLAN_HLEN)
if (!pskb_may_pull(skb, skb_transport_offset(skb) + VXLAN_HLEN))
return -EINVAL;
hdr = vxlan_hdr(skb);