USN-2491-1: Linux kernel (EC2) vulnerabilities

Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment SS register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. CVE-2014-9322 Lars Bull reported a race condition in the PIT...

Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-2491-1)

Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment SS register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. CVE-2014-9322 Lars Bull reported a race condition in the PIT...

UBUNTU-CVE-2015-0239

The emsysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service guest OS crash by triggering use of a 16-bit code segment for emulation of a...

Ubuntu 10.04 LTS : linux vulnerabilities (USN-2462-1)

Lars Bull reported a race condition in the PIT programmable interrupt timer emulation in the KVM Kernel Virtual Machine subsystem of the Linux kernel. A local guest user with access to PIT i/o ports could exploit this flaw to cause a denial of service crash on the host. CVE-2014-3611 Lars Bull an...

USN-2462-1: Linux kernel vulnerabilities

Andy Lutomirski discovered that the Linux kernel does not properly handle faults associated with the Stack Segment SS register in the x86 architecture. A local attacker could exploit this flaw to gain administrative privileges. CVE-2014-9322 Lars Bull reported a race condition in the PIT...

OracleVM 3.1 : xen (OVMSA-2013-0091)

The remote OracleVM system is missing necessary patches to address critical security updates : - x86/AMD: work around erratum 793 The recommendation is to set a bit in an MSR - do this if the firmware didn't, considering that otherwise we expose ourselves to a guest induced DoS. This is...

Ubuntu 12.04 LTS : linux vulnerabilities (USN-2417-1)

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

[USN-2394-1] Linux kernel (Trusty HWE) vulnerabilities

========================================================================== Ubuntu Security Notice USN-2394-1 October 30, 2014 linux-lts-trusty vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its...

Ubuntu 14.10 : linux vulnerabilities (USN-2396-1)

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

USN-2396-1: Linux kernel vulnerabilities

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

Ubuntu: Security Advisory (USN-2394-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2014 Greenbone AG 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-only ifdescription...

Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2394-1)

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

USN-2395-1: Linux kernel vulnerabilities

Nadav Amit reported that the KVM Kernel Virtual Machine mishandles noncanonical addresses when emulating instructions that change the rip Instruction Pointer. A guest user with access to I/O or the MMIO can use this flaw to cause a denial of service system crash of the guest. CVE-2014-3647 A flaw...

Fedora 19 : xen-4.2.5-3.fc19 (2014-12000)

Improper MSR range used for x2APIC emulation XSA-108, CVE-2014-7188 Race condition in HVMOPtrackdirtyvram XSA-104 1145736 Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation XSA-105 1145737 Missing privilege level checks in x86 emulation of software interrupts XSA-106 114573...

DEBIAN-CVE-2014-7188

The hvmmsrreadintercept function in arch/x86/hvm/hvm.c in Xen 4.1 through 4.4.x uses an improper MSR range for x2APIC emulation, which allows local HVM guests to cause a denial of service host crash or read data from the hypervisor or other guests via unspecified vectors...

CVE-2014-7188

The hvmmsrreadintercept function in arch/x86/hvm/hvm.c in Xen 4.1 through 4.4.x uses an improper MSR range for x2APIC emulation, which allows local HVM guests to cause a denial of service host crash or read data from the hypervisor or other guests via unspecified vectors...

PT-2014-7823

Name of the Vulnerable Software and Affected Versions Xen versions 4.1 through 4.4.x Description The issue is related to the hvm msr read intercept function in the arch/x86/hvm/hvm.c file, which improperly handles the MSR range for x2APIC emulation. This allows local HVM guests to cause a denial ...

Improper MSR range used for x2APIC emulation

ISSUE DESCRIPTION The MSR range specified for APIC use in the x2APIC access model spans 256 MSRs. Hypervisor code emulating read and write accesses to these MSRs erroneously covered 1024 MSRs. While the write emulation path is written such that accesses to the extra MSRs would not have any bad...

Linux Kernel 'MSR' Driver Local Privilege Escalation

No description provided by source. // PoC exploit for /dev/cpu//msr, 32bit userland on a 64bit host // can do whatever in the commented area, re-enable module support, etc // requires CONFIGX86MSR and just uid 0 // a small race exists between the time when the MSR is written to the first // time...

Linux Kernel MSR Driver Privilege Escalation Vulnerability

Proof of concept exploit for the /dev/cpu//msr race condition that allows for privilege escalation in Linux kernels prior to 3.7.6. // PoC exploit for /dev/cpu//msr, 32bit userland on a 64bit host // can do whatever in the commented area, re-enable module support, etc // requires CONFIGX86MSR and...