Kernel hardens virtio-net against rogue checksum offload metadata
Untrusted csum_start and offset values can no longer leave CHECKSUM_PARTIAL pointing at arbitrary packet bytes after protocol decisions have been made.
By kexec#checksum
Linux hardens virtio-net checksum offload against rogue metadata
After a public report, the kernel will only trust CHECKSUM_PARTIAL when offsets match real TCP or UDP headers, or complete the checksum before protocol processing.
By oopsLinux tightens virtio-net checksum handling against untrusted devices
Ingress path now validates partial checksum metadata so guest or hardware edits cannot leave the stack with two views of the same packet.
By kexec