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.
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