CVE-2026-74616 xdp: reject clones that overrun skb_shared_info tailroom

In the Linux kernel, the following vulnerability has been resolved: xdp: reject clones that overrun skbsharedinfo tailroom xdpfclone clones broadcast copies into a single page and sets framesz to PAGESIZE. xdpbuildskbfromframe later treats that page like a normal XDP frame and expects the usual...

CVE-2026-74616

CVE-2026-74616 affects the Linux kernel XDP (eXpress Data Path) subsystem. The flaw resides in xdpf_clone(), which clones broadcast copies into a single page and sets frame_sz to PAGE_SIZE. The existing size check only validates that the linear xdp_frame header, headroom, and packet data do not e...