diff --git a/stand/libsa/smbios.c b/stand/libsa/smbios.c --- a/stand/libsa/smbios.c +++ b/stand/libsa/smbios.c @@ -193,6 +193,12 @@ #ifdef SMBIOS_64BIT_EP /* v3.0, 64-bit Entry point */ if (strncmp(cp, SMBIOS3_SIG, sizeof(SMBIOS3_SIG) - 1) == 0 && + /* + * Entry Point Revision must not be 0 for the Structure + * Table Maximum Size and Address fields to be present at + * the expected offsets 0x0c and 0x10. + */ + SMBIOS_GET8(cp, 0x0a) != 0 && smbios_checksum(cp, SMBIOS_GET8(cp, 0x06)) == 0) { smbios.is_64bit_ep = 1; return (cp);