2) OLD QEMU GUEST (Bionic) #### REGULAR QEMU GUEST IN OLD QEMU
Spectre and Meltdown mitigation detection tool v0.42-1-g91d0699 Checking for vulnerabilities on current system Kernel is Linux 4.18.0-23-generic #24~18.04.1-Ubuntu SMP Thu Jun 13 17:08:52 UTC 2019 x86_64 CPU is Intel(R) Xeon(R) Gold 6252 CPU @ 2.10GHz -------- Hardware check * Hardware support (CPU microcode) for mitigation techniques * Indirect Branch Restricted Speculation (IBRS) * SPEC_CTRL MSR is available: YES * CPU indicates IBRS capability: YES (SPEC_CTRL feature bit) * Indirect Branch Prediction Barrier (IBPB) * PRED_CMD MSR is available: YES * CPU indicates IBPB capability: YES (SPEC_CTRL feature bit) * Single Thread Indirect Branch Predictors (STIBP) * SPEC_CTRL MSR is available: YES * CPU indicates STIBP capability: NO * Speculative Store Bypass Disable (SSBD) * CPU indicates SSBD capability: YES (Intel SSBD) * L1 data cache invalidation * FLUSH_CMD MSR is available: NO * CPU indicates L1D flush capability: NO * Microarchitecture Data Sampling * VERW instruction is available: YES (MD_CLEAR feature bit) * Enhanced IBRS (IBRS_ALL) * CPU indicates ARCH_CAPABILITIES MSR availability: NO * ARCH_CAPABILITIES MSR advertises IBRS_ALL capability: NO * CPU explicitly indicates not being vulnerable to Meltdown/L1TF (RDCL_NO): NO * CPU explicitly indicates not being vulnerable to Variant 4 (SSB_NO): NO * CPU/Hypervisor indicates L1D flushing is not necessary on this system: NO * Hypervisor indicates host CPU might be vulnerable to RSB underflow (RSBA): NO * CPU explicitly indicates not being vulnerable to Microarchitectural Data Sampling (MDS_NO): NO * CPU supports Software Guard Extensions (SGX): NO * CPU microcode is known to cause stability problems: NO (model 0x55 family 0x6 stepping 0x6 ucode 0x1 cpuid 0x50656) * CPU microcode is the latest known available version: NO (latest version is 0x4000024 dated 2019/04/07 according to builtin MCExtractor DB v112 - 2019/05/22) -------- * CPU vulnerability to the speculative execution attack variants * Vulnerable to CVE-2017-5753 (Spectre Variant 1, bounds check bypass): YES * Vulnerable to CVE-2017-5715 (Spectre Variant 2, branch target injection): YES * Vulnerable to CVE-2017-5754 (Variant 3, Meltdown, rogue data cache load): YES * Vulnerable to CVE-2018-3640 (Variant 3a, rogue system register read): YES * Vulnerable to CVE-2018-3639 (Variant 4, speculative store bypass): YES * Vulnerable to CVE-2018-3615 (Foreshadow (SGX), L1 terminal fault): NO * Vulnerable to CVE-2018-3620 (Foreshadow-NG (OS), L1 terminal fault): YES * Vulnerable to CVE-2018-3646 (Foreshadow-NG (VMM), L1 terminal fault): YES * Vulnerable to CVE-2018-12126 (Fallout, microarchitectural store buffer data sampling (MSBDS)): YES * Vulnerable to CVE-2018-12130 (ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)): YES * Vulnerable to CVE-2018-12127 (RIDL, microarchitectural load port data sampling (MLPDS)): YES * Vulnerable to CVE-2019-11091 (RIDL, microarchitectural data sampling uncacheable memory (MDSUM)): YES -------- ## CVE-2017-5753 aka 'Spectre Variant 1, bounds check bypass' * Mitigated according to the /sys interface: YES (Mitigation: __user pointer sanitization) * Kernel has array_index_mask_nospec: YES (1 occurrence(s) found of x86 64 bits array_index_mask_nospec()) * Kernel has the Red Hat/Ubuntu patch: NO * Kernel has mask_nospec64 (arm64): NO > STATUS: NOT VULNERABLE (Mitigation: __user pointer sanitization) ## CVE-2017-5715 aka 'Spectre Variant 2, branch target injection' * Mitigated according to the /sys interface: YES (Mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: disabled, RSB filling) * Mitigation 1 * Kernel is compiled with IBRS support: YES * IBRS enabled and active: YES (for firmware code only) * Kernel is compiled with IBPB support: YES * IBPB enabled and active: YES * Mitigation 2 * Kernel has branch predictor hardening (arm): NO * Kernel compiled with retpoline option: YES * Kernel supports RSB filling: YES > STATUS: NOT VULNERABLE (Full retpoline + IBPB are mitigating the vulnerability) ## CVE-2017-5754 aka 'Variant 3, Meltdown, rogue data cache load' * Mitigated according to the /sys interface: YES (Mitigation: PTI) * Kernel supports Page Table Isolation (PTI): YES * PTI enabled and active: YES * Reduced performance impact of PTI: YES (CPU supports INVPCID, performance impact of PTI will be greatly reduced) * Running as a Xen PV DomU: NO > STATUS: NOT VULNERABLE (Mitigation: PTI) ## CVE-2018-3640 aka 'Variant 3a, rogue system register read' * CPU microcode mitigates the vulnerability: YES > STATUS: NOT VULNERABLE (your CPU microcode mitigates the vulnerability) ## CVE-2018-3639 aka 'Variant 4, speculative store bypass' * Mitigated according to the /sys interface: YES (Mitigation: Speculative Store Bypass disabled via prctl and seccomp) * Kernel supports disabling speculative store bypass (SSB): YES (found in /proc/self/status) * SSB mitigation is enabled and active: YES (per-thread through prctl) * SSB mitigation currently active for selected processes: YES (systemd-journald systemd-logind systemd-timesyncd systemd-udevd) > STATUS: NOT VULNERABLE (Mitigation: Speculative Store Bypass disabled via prctl and seccomp) ## CVE-2018-3615 aka 'Foreshadow (SGX), L1 terminal fault' * CPU microcode mitigates the vulnerability: N/A > STATUS: NOT VULNERABLE (your CPU vendor reported your CPU model as not vulnerable) ## CVE-2018-3620 aka 'Foreshadow-NG (OS), L1 terminal fault' * Mitigated according to the /sys interface: YES (Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled) * Kernel supports PTE inversion: YES (found in kernel image) * PTE inversion enabled and active: YES > STATUS: NOT VULNERABLE (Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled) ## CVE-2018-3646 aka 'Foreshadow-NG (VMM), L1 terminal fault' * Information from the /sys interface: Mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled * This system is a host running a hypervisor: NO * Mitigation 1 (KVM) * EPT is disabled: NO * Mitigation 2 * L1D flush is supported by kernel: YES (found flush_l1d in kernel image) * L1D flush enabled: YES (conditional flushes) * Hardware-backed L1D flush supported: NO (flush will be done in software, this is slower) * Hyper-Threading (SMT) is enabled: NO > STATUS: NOT VULNERABLE (this system is not running a hypervisor) ## CVE-2018-12126 aka 'Fallout, microarchitectural store buffer data sampling (MSBDS)' * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT Host state unknown) * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo) * Kernel mitigation is enabled and active: YES * SMT is either mitigated or disabled: NO > STATUS: NOT VULNERABLE (Mitigation: Clear CPU buffers; SMT Host state unknown) ## CVE-2018-12130 aka 'ZombieLoad, microarchitectural fill buffer data sampling (MFBDS)' * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT Host state unknown) * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo) * Kernel mitigation is enabled and active: YES * SMT is either mitigated or disabled: NO > STATUS: NOT VULNERABLE (Mitigation: Clear CPU buffers; SMT Host state unknown) ## CVE-2018-12127 aka 'RIDL, microarchitectural load port data sampling (MLPDS)' * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT Host state unknown) * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo) * Kernel mitigation is enabled and active: YES * SMT is either mitigated or disabled: NO > STATUS: NOT VULNERABLE (Mitigation: Clear CPU buffers; SMT Host state unknown) ## CVE-2019-11091 aka 'RIDL, microarchitectural data sampling uncacheable memory (MDSUM)' * Mitigated according to the /sys interface: YES (Mitigation: Clear CPU buffers; SMT Host state unknown) * Kernel supports using MD_CLEAR mitigation: YES (md_clear found in /proc/cpuinfo) * Kernel mitigation is enabled and active: YES * SMT is either mitigated or disabled: NO > STATUS: NOT VULNERABLE (Mitigation: Clear CPU buffers; SMT Host state unknown) -------- > SUMMARY: CVE-2017-5753:OK CVE-2017-5715:OK CVE-2017-5754:OK CVE-2018-3640:OK CVE-2018-3639:OK CVE-2018-3615:OK CVE-2018-3620:OK CVE-2018-3646:OK CVE-2018-12126:OK CVE-2018-12130:OK CVE-2018-12127:OK CVE-2019-11091:OK -------- $ sudo /usr/bin/qemu-system-x86_64 -name guest="guest" -machine accel=kvm -cpu host,ssbd=on,md-clear=on, -m 2048 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 7e55c71a-558f-412c-8445-db0e95fc549f -display none -no-user-config -nodefaults -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot strict=on -kernel /var/lib/libvirt/images/guest/vmlinuz -initrd /var/lib/libvirt/images/guest/initrd.img -append "root=/dev/vda noresume console=tty0 console=ttyS0,38400n8 apparmor=0 net.ifnames=0 crashkernel=256M" -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/libvirt/images/guest/disk01.ext4.qcow2,format=qcow2,if=none,id=drive-virtio-disk0 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 -msg timestamp=on -serial stdio QEMU DOES NOT SUPPORT: arch-capabilities wbnoinvd rdctl-no ibrs-all rsba skip-l1dfl-vmentry ssbno HOST DOES NOT SUPPORT: ibpb virt-ssb 2019-06-21T12:29:19.463408Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000008H:EBX.ibpb [bit 12] 2019-06-21T12:29:19.463439Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000008H:EBX.virt-ssbd [bit 25] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1828495 Title: [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM. To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1828495/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs