03606895cd98c0a628b17324fd7b5ff15db7e3cd - kernel/msm-4.9

commit	03606895cd98c0a628b17324fd7b5ff15db7e3cd	[log] [tgz]
author	Eric Dumazet <eric.dumazet@gmail.com>	Thu Feb 23 10:55:02 2012 +0000
committer	David S. Miller <davem@davemloft.net>	Thu Feb 23 16:50:45 2012 -0500
tree	26aab95243f23a5d0cff45ee0d6afd1608afe5df
parent	4a2258ddddefeef3291c0fc66437c73d84261a1e [diff]

ipsec: be careful of non existing mac headers

Niccolo Belli reported ipsec crashes in case we handle a frame without
mac header (atm in his case)

Before copying mac header, better make sure it is present.

Bugzilla reference:  https://bugzilla.kernel.org/show_bug.cgi?id=42809

Reported-by: Niccolò Belli <darkbasic@linuxsystems.it>
Tested-by: Niccolò Belli <darkbasic@linuxsystems.it>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/skbuff.h[diff]
net/ipv4/xfrm4_mode_beet.c[diff]
net/ipv4/xfrm4_mode_tunnel.c[diff]
net/ipv6/xfrm6_mode_beet.c[diff]
net/ipv6/xfrm6_mode_tunnel.c[diff]

5 files changed

tree: 26aab95243f23a5d0cff45ee0d6afd1608afe5df