CVE-2023-53107 veth: Fix use after free in XDP_REDIRECT

In the Linux kernel, the following vulnerability has been resolved: veth: Fix use after free in XDPREDIRECT Commit 718a18a0c8a6 "veth: Rework vethxdprcvskb in order to accept non-linear skb" introduced a bug where it tried to use pskbexpandhead if the headroom was less than XDPPACKETHEADROOM. Thi...