diff options
| author | Arnaldo Carvalho de Melo <acme@kernel.org> | 2016-11-28 12:36:58 -0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-29 20:45:54 -0500 |
| commit | a510887824171ad260cc4a2603396c6247fdd091 (patch) | |
| tree | 0ced3affea36b2952e9fbced2373080e2a314668 /net | |
| parent | 725cbb62e7ade1bb29aa21a902d74e72b42a0f3d (diff) | |
GSO: Reload iph after pskb_may_pull
As it may get stale and lead to use after free.
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Alexander Duyck <aduyck@mirantis.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Fixes: cbc53e08a793 ("GSO: Add GSO type for fixed IPv4 ID")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/af_inet.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 5ddf5cda07f4..215143246e4b 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1233,7 +1233,7 @@ struct sk_buff *inet_gso_segment(struct sk_buff *skb, fixedid = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID); /* fixed ID is invalid if DF bit is not set */ - if (fixedid && !(iph->frag_off & htons(IP_DF))) + if (fixedid && !(ip_hdr(skb)->frag_off & htons(IP_DF))) goto out; } |