kernel: bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()

A flaw was found in the Linux kernel's extended Berkeley Packet Filter eBPF subsystem. A privileged local attacker, with CAPSYSADMIN capabilities or root access, could exploit a use-after-free vulnerability in the bpfuprobemultilinkattach function. This issue arises when bpflinkprime fails, leadi...