CVE-2026-45839

CVE-2026-45839 is a Linux kernel vulnerability where negative CO-RE accessor indices in bpf_core_parse_spec() could cause an out-of-bounds read, leading to a deterministic kernel crash during BPF program load on systems with CONFIG_DEBUG_INFO_BTF=y. The issue arises because sscanf parses componen...

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...