missing preemption in x86 PV page table unvalidation

ISSUE DESCRIPTION XSA-273 changes required, among other things, making any PTE updates restartable. The changes making PTE updates restartable assumed that L2 pagetables would always be promoted preemptibly; but this turns out not to be the case when using the 'linear pagetable' feature; the resu...

CVE-2018-20168

Google gVisor before 2018-08-22 reuses a pagetable in a different level with the paging-structure cache intact, which allows attackers to cause a denial of service "physical address not valid" panic via a crafted application...

openSUSE: Security Advisory for xen (openSUSE-SU-2018:1487-1)

The remote host is missing an update for the Copyright C 2018 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later This program is free software; you can...

Security update for xen (important)

This update for xen fixes the following issues: Security issues fixed: - CVE-2018-3639: Spectre V4 – Speculative Store Bypass aka "Memory Disambiguation" bsc1092631 This feature can be controlled by the "ssbd=on/off" commandline flag for the XEN hypervisor. - CVE-2018-10982: x86 vHPET interrupt...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:1456-1) (Spectre)

This update for xen fixes the following issues: Security issues fixed : - CVE-2018-3639: Spectre V4 Speculative Store Bypass aka 'Memory Disambiguation' bsc1092631 This feature can be controlled by the 'ssbd=on/off' commandline flag for the XEN hypervisor. - CVE-2018-10982: x86 vHPET interrupt...

SUSE-SU-2018:1456-1 Security update for xen

This update for xen fixes the following issues: Security issues fixed: - CVE-2018-3639: Spectre V4 – Speculative Store Bypass aka 'Memory Disambiguation' bsc1092631 This feature can be controlled by the 'ssbd=on/off' commandline flag for the XEN hypervisor. - CVE-2018-10982: x86 vHPET interrupt...

SUSE-SU-2018:0638-1 Security update for xen

This update for xen fixes several issues. This new feature was included: - add script and sysv service to watch for vcpu online/offline events in a HVM domU These security issues were fixed: - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative...

SUSE-SU-2018:0609-1 Security update for xen

This update for xen fixes several issues. These security issues were fixed: - CVE-2017-5753, CVE-2017-5715, CVE-2017-5754: Prevent information leaks via side effects of speculative execution, aka 'Spectre' and 'Meltdown' attacks bsc1074562, bsc1068032 - CVE-2018-5683: The vgadrawtext function...

Debian DSA-4131-1 : xen - security update

Multiple vulnerabilities have been discovered in the Xen hypervisor : - CVE-2018-7540 Jann Horn discovered that missing checks in page table freeing may result in denial of service. - CVE-2018-7541 Jan Beulich discovered that incorrect error handling in grant table checks may result in...

Xen Denial of Service Vulnerability (CNVD-2018-04652)

Xen is an open source virtual machine monitor developed by the Xen Project. A denial of service vulnerability exists in 4.10.x and earlier versions of Xen. x86 PV guest OS users can exploit this vulnerability to cause a denial of service host OS CPU hang via a non-preemptive L3/L4 page table...

UBUNTU-CVE-2017-15128

A flaw was found in the hugetlbmcopyatomicpte function in mm/hugetlb.c in the Linux kernel before 4.13.12. A lack of size check could cause a denial of service BUG...

MGASA-2018-0075 Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update provides the upstream 4.4.111 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update provided the upstream 4.14.13 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

MGASA-2018-0078 Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update provided the upstream 4.14.13 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.14.13 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

Updated kernel-tmb packages fix security vulnerabilities

This kernel-tmb update is based on the upstream 4.4.111 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

Updated kernel packages fix security vulnerabilities

This kernel update is based on the upstream 4.14.13 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KPTI. Note that according to AMD, this issue does not...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update provides the upstream 4.4.111 and fixes several security issues. The most important fix in this update is for the security issue named "Meltdown" that is fixed in theese kernels by enabling kernel Page Table Isolation KTPI. Note that according to AMD, this issue does not...

Debian DSA-4082-1 : linux - security update (Meltdown)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. - CVE-2017-5754 Multiple researchers have discovered a vulnerability in Intel processors, enabling an attacker controlling an unprivileged process to...

SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0031-1) (Meltdown) (Spectre)

The SUSE Linux Enterprise 12 SP1 LTSS kernel was updated to receive various security and bugfixes. This update adds mitigations for various side channel attacks against modern CPUs that could disclose content of otherwise unreadable memory bnc1068032. - CVE-2017-5753 / 'SpectreAttack': Local...