CVE-2025-21629 | Linux Kernel up to 6.1.123/6.6.69/6.12.8 on BIG IPv6 Extension Header skbuff.h ipv6_has_hopopt_jumbo privilege escalation (Nessus ID 216985 / WID-SEC-2025-0105)
A vulnerability was found in Linux Kernel up to 6.1.123/6.6.69/6.12.8 on BIG. It has been declared as problematic. This affects the function ipv6_has_hopopt_jumbo in the library skbuff.h of the component IPv6 Extension Header Handler. The manipulation results in privilege escalation.
This vulnerability was named CVE-2025-21629. The attack needs to be approached within the local network. There is no available exploit.
It is recommended to upgrade the affected component.