Description: ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()
References:
Notes:
 carnil> Introduced in fbfa743a9d2a ("ipv6: fix ip6_tnl_parse_tlv_enc_lim()").
 carnil> Vulnerable versions: 3.2.87 3.10.106 3.12.71 3.16.42 3.18.49 4.4.50 4.9.11
 carnil> 4.10-rc6.
Bugs:
upstream: released (6.8-rc1) [d375b98e0248980681e5e56b712026174d617198]
6.7-upstream-stable: released (6.7.2) [ba8d904c274268b18ef3dc11d3ca7b24a96cb087]
6.6-upstream-stable: released (6.6.14) [687c5d52fe53e602e76826dbd4d7af412747e183]
6.1-upstream-stable: released (6.1.75) [62a1fedeb14c7ac0947ef33fadbabd35ed2400a2]
5.10-upstream-stable: released (5.10.209) [da23bd709b46168f7dfc36055801011222b076cd]
4.19-upstream-stable: released (4.19.306) [135414f300c5db995e2a2f3bf0f455de9d014aee]
sid: released (6.6.15-1)
6.1-bookworm-security: released (6.1.76-1)
5.10-bullseye-security: released (5.10.209-1)
4.19-buster-security: needed