Change Details

If a jumbo option is added, the length of the mbuf chain is increased by 8 but the actual hop-by-hop option is only inserted in the packet if there are other options. Therefore, increment `optlen` to reflect the actual size of IPv6 options including the jumbo frame option. Reported-by: syzbot+73fe316271df473230eb@syzkaller.appspotmail.com

If a jumbo payload option is added, the length of the mbuf chain is increased by 8 but the actual hop-by-hop extension header with the jumbo playload option is only inserted in the packet if there are other options. Therefore, adjust `optlen` to reflect the actual size of IPv6 extension headers including the hop-by-hop extension header containing the jumbo payload option. Reported-by: syzbot+73fe316271df473230eb@syzkaller.appspotmail.com

If a jumbo payload option is added, the length of the mbuf chain is increased by 8 but the actual hop-by-hop extension header with the jumbo playload option is only inserted in the packet if there are other options. Therefore, incrementadjust `optlen` to reflect the actual size of IPv6 optionextension headers includding the hop-by-hop extension header containing the jumbo framepayload option. Reported-by: syzbot+73fe316271df473230eb@syzkaller.appspotmail.com