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91c524708d
The size of L2TPv2 header with all optional fields is 14 bytes.
l2tp_udp_recv_core only moves 10 bytes to the linear part of a
skb. This may lead to l2tp_recv_common read data outside of a skb.
This patch make sure that there is at least 14 bytes in the linear
part of a skb to meet the maximum need of l2tp_udp_recv_core and
l2tp_recv_common. The minimum size of both PPP HDLC-like frame and
Ethernet frame is larger than 14 bytes, so we are safe to do so.
Also remove L2TP_HDR_SIZE_NOSEQ, it is unused now.
Fixes:
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.. | ||
Kconfig | ||
l2tp_core.c | ||
l2tp_core.h | ||
l2tp_debugfs.c | ||
l2tp_eth.c | ||
l2tp_ip6.c | ||
l2tp_ip.c | ||
l2tp_netlink.c | ||
l2tp_ppp.c | ||
Makefile |