CVE-2026-45839

CVE-2026-45839 affects the Linux kernel BPF Core Relocation (CO-RE) parsing. Negative CO-RE accessor indices parsed by bpf_core_parse_spec() were not rejected, allowing an out-of-bounds read when -1 reaches btf_member_bit_offset(). This can crash the kernel during BPF_PROG_LOAD on systems with CO...

The vulnerability in the BPF subsystem of the `map_create` or `check_btf_info` function of the Linux kernel allows a malicious actor to cause an unexpected termination of the application.

The vulnerability of the BPF subsystem of the mapcreate function kernel/bpf/syscall.c or checkbtfinfo function kernel/bpf/verifier.c in the Linux operating system kernel is due to deficiencies in the authentication process. Exploiting this vulnerability can allow an attacker to cause an applicati...