Debian DSA-4236-1 : xen - security update

Multiple vulnerabilities have been discovered in the Xen hypervisor : - CVE-2018-12891 It was discovered that insufficient validation of PV MMU operations may result in denial of service. - CVE-2018-12892 It was discovered that libxl fails to honour the 'readonly' flag on HVM-emulated SCSI disks....

CVE-2018-12891

An issue was discovered in Xen through 4.10.x. Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions...

preemption checks bypassed in x86 PV MM handling

ISSUE DESCRIPTION Certain PV MMU operations may take a long time to process. For that reason Xen explicitly checks for the need to preempt the current vCPU at certain points. A few rarely taken code paths did bypass such checks. By suitably enforcing the conditions through its own page table...

Amazon Linux 2 : kernel (ALAS-2018-939) (Meltdown) (Spectre)

An updated kernel release for Amazon Linux has been made available which prevents speculative execution of indirect branches within the kernel. This release incorporates latest stable open source Linux security improvements to address CVE-2017-5715 within the kernel and builds upon previously...

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

An update for kernel is now available 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 available for each vulnerability from th...

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

An update for kernel-rt is now available 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 available for each vulnerability from...

Amazon Linux AMI : kernel (ALAS-2018-939) (Meltdown) (Spectre)

An updated kernel release for Amazon Linux has been made available which prevents speculative execution of indirect branches within the kernel. This release incorporates latest stable open source Linux security improvements to address CVE-2017-5715 within the kernel and builds upon previously...

Critical: kernel

Issue Overview: An updated kernel release for Amazon Linux has been made available which prevents speculative execution of indirect branches within the kernel. This release incorporates latest stable open source Linux security improvements to address CVE-2017-5715 within the kernel and builds upo...

Linux kernel denial of service vulnerability (CNVD-2017-30421)

The Linux kernel is a computer operating system kernel written in C and assembly language, compliant with the POSIX standard, and distributed under the GNU General Public License. arch/x86/kvm/mmu.c in the Linux kernel fails to properly traverse client-side page table entries to resolve client-si...

Stack overflow

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service incorrect index...

CVE-2017-12188

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service incorrect index...

CVE-2017-12188

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service incorrect index...

UBUNTU-CVE-2017-12188

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service incorrect index...

kernel security, bug fix, and enhancement update

3.10.0-514.21.1.OL7 - Oracle Linux certificates Alexey Petrenko - Oracle Linux RHCK Module Signing Key was compiled into kernel [email protected] - Update x509.genkey bug 24817676 3.10.0-514.21.1 - kernel sched/core: Fix an SMP ordering race in trytowakeup vs...

CVE-2017-5925

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern Intel processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR...

CVE-2017-5926

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern AMD processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR...

CVE-2017-5927

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern ARM processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR...

Design/Logic Flaw

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern ARM processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR...

Code injection

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern Intel processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR...

CVE-2017-5927

CVE-2017-5927 affects ARM processors where page table walks by the MMU during virtual-to-physical address translation leave traces in the last-level cache. A side-channel attack via JavaScript can infer memory and code pointers, breaking ASLR. The linked SUSE entry and related coverage confirm th...