CVE-2024-43837 bpf: Fix null pointer dereference in resolve_prog_type() for BPF_PROG_TYPE_EXT

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix null pointer dereference in resolveprogtype for BPFPROGTYPEEXT When loading a EXT program without specifying attr-attachprogfd, the prog-aux-dstprog will be null. At this time, calling resolveprogtype anywhere will resul...

Linux Kernel 4.4.x (Ubuntu 16.04) - 'double-fdput()' bpf(BPF_PROG_LOAD) Privilege Escalation

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=808 In Linux =4.4, when the CONFIGBPFSYSCALL config option is set and the kernel.unprivilegedbpfdisabled sysctl is not explicitly set to 1 at runtime, unprivileged code can use the bpf syscall to load eBPF socket filter programs...