Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_inner: Fix IPv6 inner_thoff desync In nft_inner_parse_l2l3(), when processing inner IPv6 packets, ipv6_find_hdr() correctly computes the transport header offset traversing all extension headers, but the result is immediately overwritten with nhoff + sizeof(_ip6h) (40 bytes), which only accounts for the IPv6 base header. This creates a desync between inner_thoff (wrong — points to extension header start) and l4proto (correct — e.g., IPPROTO_TCP), enabling transport header forgery and potential firewall bypass. This issue affects stable versions from Linux 6.2. For comparison, the normal (non-inner) IPv6 path correctly preserves ipv6_find_hdr()'s result. Removing the incorrect overwrite ensures that ipv6_find_hdr()'s calculated transport header offset is preserved, thereby fixing the desynchronization.
Mitigation
Minimal update. May introduce new vulnerabilities or breaking changes.
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 debian 13 | | =6.12.38-1 || =6.12.41-1 || =6.12.43-1 || =6.12.43-1~bpo12+1 || =6.12.48-1 || =6.12.57-1 || =6.12.57-1~bpo12+1 || =6.12.63-1 || =6.12.63-1~bpo12+1 || =6.12.69-1 || =6.12.69-1~bpo12+1 || =6.12.73-1 || =6.12.73-1~bpo12+1 || =6.12.74-1 || =6.12.74-2 || =6.12.74-2~bpo12+1 || =6.12.85-1 || =6.12.85-1~bpo12+1 || =6.12.86-1 || =6.12.86-1~bpo12+1 || =6.12.88-1 || =6.12.88-1~bpo12+1 || =6.12.90-1 || =6.12.90-1~bpo12+1 || =6.12.90-2 || =6.12.90-2~bpo12+1 || =6.13.10-1~exp1 || =6.13.11-1~exp1 || =6.13.2-1~exp1 || =6.13.3-1~exp1 || =6.13.4-1~exp1 || =6.13.5-1~exp1 || =6.13.6-1~exp1 || =6.13.7-1~exp1 || =6.13.8-1~exp1 || =6.13.9-1~exp1 || =6.13~rc6-1~exp1 || =6.13~rc7-1~exp1 || =6.14.3-1~exp1 || =6.14.5-1~exp1 || =6.14.6-1~exp1 || =6.15-1~exp1 || =6.15.1-1~exp1 || =6.15.2-1~exp1 || =6.15.3-1~exp1 || =6.15.4-1~exp1 || =6.15.5-1~exp1 || =6.15.6-1~exp1 || =6.15~rc7-1~exp1 || =6.16-1~exp1 || =6.16.1-1~exp1 || =6.16.10-1 || =6.16.11-1 || =6.16.12-1 || =6.16.12-1~bpo13+1 || =6.16.12-2 || =6.16.3-1 || =6.16.3-1~bpo13+1 || =6.16.5-1 || =6.16.6-1 || =6.16.7-1 || =6.16.8-1 || =6.16.9-1 || =6.16~rc7-1~exp1 || =6.17.10-1 || =6.17.11-1 || =6.17.12-1 || =6.17.13-1 || =6.17.13-1~bpo13+1 || =6.17.2-1~exp1 || =6.17.5-1~exp1 || =6.17.6-1 || =6.17.7-1 || =6.17.7-2 || =6.17.8-1 || =6.17.8-1~bpo13+1 || =6.17.9-1 || =6.18.1-1~exp1 || =6.18.10-1 || =6.18.12-1 || =6.18.12-1~bpo13+1 || =6.18.13-1 || =6.18.14-1 || =6.18.15-1 || =6.18.15-1~bpo13+1 || =6.18.2-1~exp1 || =6.18.3-1 || =6.18.5-1 || =6.18.5-1~bpo13+1 || =6.18.8-1 || =6.18.9-1 || =6.18.9-1~bpo13+1 || =6.18~rc4-1~exp1 || =6.18~rc4-1~exp2 || =6.18~rc5-1~exp1 || =6.18~rc6-1~exp1 || =6.18~rc7-1~exp1 || =6.19-1~exp1 || =6.19.10-1 || =6.19.10-1~bpo13+1 || =6.19.11-1 || =6.19.11-1~bpo13+1 || =6.19.12-1 || =6.19.13-1 || =6.19.13-1~bpo13+1 || =6.19.14-1 || =6.19.14-1~bpo13+1 || =6.19.2-1~exp1 || =6.19.3-1~exp1 || =6.19.4-1~exp1 || =6.19.5-1~exp1 || =6.19.6-1 || =6.19.6-2 || =6.19.6-2~bpo13+1 || =6.19.8-1 || =6.19.8-1~bpo13+1 || =6.19~rc4-1~exp1 || =6.19~rc5-1~exp1 || =6.19~rc6-1~exp1 || =6.19~rc7-1~exp1 || =6.19~rc8-1~exp1 || =7.0-1~exp1 || =7.0.1-1~exp1 || =7.0.10-1 || =7.0.10-1~bpo13+1 || =7.0.3-1 || =7.0.4-1 || =7.0.4-1~bpo13+1 || =7.0.7-1 || =7.0.7-1~bpo13+1 || =7.0.9-1 || =7.0.9-1~bpo13+1 || =7.1~rc2-1~exp1 || =7.1~rc3-1~exp1 || =7.1~rc4-1~exp1 || =7.1~rc4-1~exp2 || =7.1~rc5-1~exp1 |
debian 14 | | =6.12.38-1 || =6.12.41-1 || =6.12.43-1 || =6.12.43-1~bpo12+1 || =6.12.48-1 || =6.12.57-1 || =6.12.57-1~bpo12+1 || =6.12.63-1 || =6.12.63-1~bpo12+1 || =6.12.69-1 || =6.12.69-1~bpo12+1 || =6.12.73-1 || =6.12.73-1~bpo12+1 || =6.12.74-1 || =6.12.74-2 || =6.12.74-2~bpo12+1 || =6.12.85-1 || =6.12.85-1~bpo12+1 || =6.12.86-1 || =6.12.86-1~bpo12+1 || =6.12.88-1 || =6.12.88-1~bpo12+1 || =6.12.90-1 || =6.12.90-1~bpo12+1 || =6.12.90-2 || =6.12.90-2~bpo12+1 || =6.13.10-1~exp1 || =6.13.11-1~exp1 || =6.13.2-1~exp1 || =6.13.3-1~exp1 || =6.13.4-1~exp1 || =6.13.5-1~exp1 || =6.13.6-1~exp1 || =6.13.7-1~exp1 || =6.13.8-1~exp1 || =6.13.9-1~exp1 || =6.13~rc6-1~exp1 || =6.13~rc7-1~exp1 || =6.14.3-1~exp1 || =6.14.5-1~exp1 || =6.14.6-1~exp1 || =6.15-1~exp1 || =6.15.1-1~exp1 || =6.15.2-1~exp1 || =6.15.3-1~exp1 || =6.15.4-1~exp1 || =6.15.5-1~exp1 || =6.15.6-1~exp1 || =6.15~rc7-1~exp1 || =6.16-1~exp1 || =6.16.1-1~exp1 || =6.16.10-1 || =6.16.11-1 || =6.16.12-1 || =6.16.12-1~bpo13+1 || =6.16.12-2 || =6.16.3-1 || =6.16.3-1~bpo13+1 || =6.16.5-1 || =6.16.6-1 || =6.16.7-1 || =6.16.8-1 || =6.16.9-1 || =6.16~rc7-1~exp1 || =6.17.10-1 || =6.17.11-1 || =6.17.12-1 || =6.17.13-1 || =6.17.13-1~bpo13+1 || =6.17.2-1~exp1 || =6.17.5-1~exp1 || =6.17.6-1 || =6.17.7-1 || =6.17.7-2 || =6.17.8-1 || =6.17.8-1~bpo13+1 || =6.17.9-1 || =6.18.1-1~exp1 || =6.18.10-1 || =6.18.12-1 || =6.18.12-1~bpo13+1 || =6.18.13-1 || =6.18.14-1 || =6.18.15-1 || =6.18.15-1~bpo13+1 || =6.18.2-1~exp1 || =6.18.3-1 || =6.18.5-1 || =6.18.5-1~bpo13+1 || =6.18.8-1 || =6.18.9-1 || =6.18.9-1~bpo13+1 || =6.18~rc4-1~exp1 || =6.18~rc4-1~exp2 || =6.18~rc5-1~exp1 || =6.18~rc6-1~exp1 || =6.18~rc7-1~exp1 || =6.19-1~exp1 || =6.19.10-1 || =6.19.10-1~bpo13+1 || =6.19.11-1 || =6.19.11-1~bpo13+1 || =6.19.12-1 || =6.19.13-1 || =6.19.13-1~bpo13+1 || =6.19.14-1 || =6.19.14-1~bpo13+1 || =6.19.2-1~exp1 || =6.19.3-1~exp1 || =6.19.4-1~exp1 || =6.19.5-1~exp1 || =6.19.6-1 || =6.19.6-2 || =6.19.6-2~bpo13+1 || =6.19.8-1 || =6.19.8-1~bpo13+1 || =6.19~rc4-1~exp1 || =6.19~rc5-1~exp1 || =6.19~rc6-1~exp1 || =6.19~rc7-1~exp1 || =6.19~rc8-1~exp1 || =7.0-1~exp1 || =7.0.1-1~exp1 || =7.0.10-1 || =7.0.10-1~bpo13+1 || =7.0.3-1 || =7.0.4-1 || =7.0.4-1~bpo13+1 || =7.0.7-1 || =7.0.7-1~bpo13+1 || =7.0.9-1 || =7.0.9-1~bpo13+1 || =7.1~rc2-1~exp1 || =7.1~rc3-1~exp1 || =7.1~rc4-1~exp1 || =7.1~rc4-1~exp2 || =7.1~rc5-1~exp1 |
 rpm rhel10 | | - |
rpm rhel9 | | - |
rpm rhel9 | | - |
