Kernel: speculative bounds check bypass store

An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions past bounds check. The flaw relies on the presence of a precisely-defined instruction sequence in the privileged code and the fact that memory writes occur to an...

Kernel: hw: cpu: L1 terminal fault (L1TF)

Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. The L1TF issue was found in the way the x86 microprocessor designs have implemented speculative execution of...

Important: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel is now available for Red Hat Enterprise Linux 6. 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 available for each vulnerability from th...

L1 Terminal Fault speculative side channel

ISSUE DESCRIPTION In x86 nomenclature, a Terminal Fault is a pagetable walk which aborts due to the page being not present e.g. paged out to disk, or because of reserved bits being set. Architecturally, such a memory access will result in a page fault exception, but some processors will...

CVE-2018-3615

Systems with microprocessors utilizing speculative execution and Intel software guard extensions Intel SGX may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via a side-channel analysis...

CVE-2018-3646

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis...

CVE-2018-3620

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis...

UBUNTU-CVE-2018-3646

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis...

UBUNTU-CVE-2018-3615

Systems with microprocessors utilizing speculative execution and Intel software guard extensions Intel SGX may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via a side-channel analysis...

UBUNTU-CVE-2018-3620

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis...

August 14, 2018—KB4343896 (Security-only update)

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Description of the security update for the L1TF variant vulnerabilities in Windows Server 2008: August 14, 2018

Description of the security update for the L1TF variant vulnerabilities in Windows Server 2008: August 14, 2018 Summary On January 3, 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectr...

August 14, 2018—KB4343885 (OS Build 15063.1266)

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August 14, 2018—KB4343909 (OS Build 17134.228)

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August 14, 2018—KB4343899 (Security-only update)

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Microsoft Guidance to mitigate L1TF variant

Executive Summary On January 3, 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels known as Spectre and Meltdown. Microsoft is aware of a new speculative execution side channel vulnerability known as ...

CVE-2018-3646: Exposure of Sensitive Information to an Unauthorized Actor

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access with guest OS privilege via a terminal page fault and a side-channel analysis...

CVE-2018-3620: Observable Discrepancy

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis...

HPSBHF03590 rev. 2 - L1 Terminal Fault (L1TF)

Potential Security Impact Unauthorized exposure of privileged data from memory. Source: HP, HP Product Security Response Team PSRT, Intel Reported By: Intel VULNERABILITY SUMMARY A new speculative execution side channel variant has been discovered called L1 Terminal Fault L1TF. There are no repor...

Security Updates for Windows Server 2008 (August 2018) (Foreshadow)

The remote Windows host is missing security updates. It is, therefore, affected by multiple vulnerabilities : - Errors exist related to microprocessors utilizing speculative execution and L1 data cache that could allow information disclosure. CVE-2018-3615, CVE-2018-3620, CVE-2018-3646 - A remote...