CVE-2023-53053 erspan: do not use skb_mac_header() in ndo_start_xmit()

In the Linux kernel, the following vulnerability has been resolved: erspan: do not use skbmacheader in ndostartxmit Drivers should not assume skbmacheaderskb == skb-data in their ndostartxmit. Use skbnetworkoffset and skbtransportoffset which better describe what is needed in erspanfbxmit and...

CVE-2023-53053

CVE-2023-53053 affects the Linux kernel: erspan handling relied on skb_mac_header() in ndo_start_xmit(), with drivers incorrectly assuming skb_mac_header(skb) == skb->data. The issue is fixed by using skb_network_offset() and skb_transport_offset() in erspan_fb_xmit() and ip6erspan_tunnel_xmit...