CVE-2025-40169

CVE-2025-40169 concerns the Linux kernel BPF verifier, where the check_alu_op() logic for ALU operations incorrectly allowed negative offsets due to signedness. The vulnerability arises when validating BPF instructions with signed 16-bit off fields; the historical check insn->off > 1 failed...

CVE-2025-40169: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: bpf: Reject negative offsets for ALU ops When verifying BPF programs, the checkaluop function validates instructions with ALU operations. The 'offset' field in these instructions is a signed 16-bit integer. The existing check...