CVE-2025-39990 bpf: Check the helper function is valid in get_helper_proto

In the Linux kernel, the following vulnerability has been resolved: bpf: Check the helper function is valid in gethelperproto kernel test robot reported verifier bug 1 where the helper func pointer could be NULL due to disabled config option. As Alexei suggested we could check on that in...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel, which stems from a possible poisoning of the link.next pointer...