hw: cpu: speculative store bypass

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions a commonly used performance optimization. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the...

Important: Red Hat Security Advisory: qemu-kvm-rhev security update

An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

hw: cpu: speculative store bypass

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions a commonly used performance optimization. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the...

CVE-2018-3640

An industry-wide issue was found in the way many modern microprocessor handle speculative access of system registers inaccessible to unprivileged user. It relies on the presence of a precisely-defined instruction sequence in the privileged code which allows speculative load of system registers an...

CVE-2018-3640

Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read RSRE, Variant 3a...

CVE-2018-3639

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Stor...

UBUNTU-CVE-2018-3640

Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may allow unauthorized disclosure of system parameters to an attacker with local user access via a side-channel analysis, aka Rogue System Register Read RSRE, Variant 3a...

UBUNTU-CVE-2018-3639

Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Stor...

Speculative Store Bypass

ISSUE DESCRIPTION Contemporary high performance processors may use a technique commonly known as Memory Disambiguation, whereby speculative execution may proceed past unresolved stores. This opens a speculative sidechannel in which loads from an address which have had a recent store can observe a...

Analysis and mitigation of speculative store bypass (CVE-2018-3639)

In January, 2018, Microsoft published an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectre and Meltdown. In this blog post, we will provide a technical analysis of an additional subclass of speculative executio...

Microsoft Guidance for Speculative Store Bypass

Executive summary On January 3, 2018, Microsoft released an advisory and security updates related to a newly-discovered class of hardware vulnerabilities known as Spectre and Meltdown involving speculative execution side channels that affect AMD, ARM, and Intel CPUs to varying degrees. On May 21s...

KB4073065: Surface guidance to protect against silicon-based microarchitectural and speculative execution side-channel vulnerabilities

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Analysis and mitigation of speculative store bypass (CVE-2018-3639)

In January, 2018, Microsoft published an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectre and Meltdown. In this blog post, we will provide a technical analysis of an additional subclass of speculative executio...

CVE-2018-3639

creationtimestamp| type| source ---|---|--- 2018-05-21 05:00:00+00:00| seen| https://msrc.microsoft.com/blog/2018/05/analysis-and-mitigation-of-speculative-store-bypass-cve-2018-3639/ 2018-05-22 00:00:00+00:00| exploited| https://www.exploit-db.com/exploits/44695 2018-05-22 07:26:30+00:00| seen|...

VMware vSphere, Workstation and Fusion updates enable Hypervisor-Assisted Guest Mitigations for Speculative Store Bypass issue.

vCenter Server, ESXi, Workstation, and Fusion update speculative execution control mechanism for Virtual Machines VMs. As a result, a patched Guest Operating System GOS can remediate the Speculative Store bypass issue CVE-2018-3639 using the Speculative-Store-Bypass-Disable SSBD control bit. This...

KLA11030 Speculative Store Bypass and Rogue System Register Read vulnerabilities in Microsoft Surface Products

On January 3, 2018, Microsoft released advisories and security updates related to a recently discovered class of hardware vulnerabilities known as Spectre and Meltdown that affect AMD, ARM, and Intel CPUs. On May 21, 2018, Intel announced the Rogue System Registry Read vulnerability. Also a new...

CPU hardware utilizing speculative execution may be vulnerable to cache side-channel attacks

Overview CPU hardware utilizing speculative execution may be vulnerable to cache timing side-channel analysis. Two vulnerabilities are identified, known as "Variant 3a" and "Variant 4". Description Speculative execution is a technique used by many modern processors to improve performance by...

BSA-2018-612

Security Advisory ID : BSA-2018-612 Component : HW:CPU Revision : 1.0: Final Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may return a speculative register value that is then used in subsequent speculative load instructions...

BSA-2018-611

Security Advisory ID : BSA-2018-611 Component : HW:CPU Revision : 1.0: Final Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may read an earlier value of the data. Subsequent speculati...

VMSA-2018-0012:VMware vSphere, Workstation and Fusion updates enable Hypervisor-Assisted Guest Mitigations for Speculative Store Bypass issue.

VMSA-2018-0012.1 VMware vSphere, Workstation and Fusion updates enable Hypervisor-Assisted Guest Mitigations for Speculative Store Bypass issue. VMware Security Advisory VMware Security Advisory Advisory ID: VMSA-2018-0012.1 VMware Security Advisory Severity: Moderate VMware Security Advisory...