CVE-2025-40123 bpf: Enforce expected_attach_type for tailcall compatibility

In the Linux kernel, the following vulnerability has been resolved: bpf: Enforce expectedattachtype for tailcall compatibility Yinhao et al. recently reported: Our fuzzer tool discovered an uninitialized pointer issue in the bpfprogtestrunxdp function within the Linux kernel's BPF subsystem. This...

The vulnerability of the bpf_prog_map_compatible() function in the kernel/bpf/core.c file of the Linux operating system allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the bpfprogmapcompatible function in the kernel/bpf/core.c file of the Linux operating system is related to errors in the code. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the protected information...