CVE-2025-39770 net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6_CSUM

In the Linux kernel, the following vulnerability has been resolved: net: gso: Forbid IPv6 TSO with extensions on devices with only IPV6CSUM When performing Generic Segmentation Offload GSO on an IPv6 packet that contains extension headers, the kernel incorrectly requests checksum offload if the...