• Kees Cook's avatar
    bpf: Check correct cred for CAP_SYSLOG in bpf_dump_raw_ok() · 63960260
    Kees Cook authored
    When evaluating access control over kallsyms visibility, credentials at
    open() time need to be used, not the "current" creds (though in BPF's
    case, this has likely always been the same). Plumb access to associated
    file->f_cred down through bpf_dump_raw_ok() and its callers now that
    kallsysm_show_value() has been refactored to take struct cred.
    
    Cc: Alexei Starovoitov <ast@kernel.org>
    Cc: Daniel Borkmann <daniel@iogearbox.net>
    Cc: bpf@vger.kernel.org
    Cc: stable@vger.kernel.org
    Fixes: 7105e828 ("bpf: allow for correlation of maps and helpers in dump")
    Signed-off-by: default avatarKees Cook <keescook@chromium.org>
    63960260
syscall.c 98.1 KB