Ubuntu: Security Advisory (USN-4184-2)

The remote host is missing an update for the SPDX-FileCopyrightText: 2019 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 18.04 LTS : Linux kernel vulnerability and regression (USN-4184-2)

The remote Ubuntu 18.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4184-2 advisory. USN-4184-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 i915 missing Blitter Command Streamer check was...

USN-4186-3 linux vulnerability

USN-4186-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 i915 missing Blitter Command Streamer check was incomplete on 64-bit Intel x86 systems. This update addresses the issue. We apologize for the inconvenience. Original advisory details:...

USN-4185-3: Linux kernel vulnerability and regression

USN-4185-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 i915 missing Blitter Command Streamer check was incomplete on 64-bit Intel x86 systems. Also, the update introduced a regression that broke KVM guests where extended page tables EPT are...

USN-4184-2: Linux kernel vulnerability and regression

USN-4184-1 fixed vulnerabilities in the Linux kernel. It was discovered that the kernel fix for CVE-2019-0155 i915 missing Blitter Command Streamer check was incomplete on 64-bit Intel x86 systems. Also, the update introduced a regression that broke KVM guests where extended page tables EPT are...

USN-4186-1 linux, linux-aws, linux-kvm vulnerabilities

Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions TSX could expose...

Denial Of Service (DoS)

kernel is vulnerable to denial of service. Intel GPU results in a denial of service condition while accessing MMIO in lower power state...

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4186-1)

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4186-1 advisory. Stephan van Schaik, Alyssa Milburn, Sebastian sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp,...

RHEL 7 : kernel (RHSA-2019:3841)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:3841 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: hw: Machine Check Error on Page Size...

Ubuntu 19.10 : Linux kernel vulnerabilities (USN-4183-1)

Stephan van Schaik, Alyssa Milburn, Sebastian Osterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions TSX could expose...

Important: Red Hat Security Advisory: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impac...

hw: Intel GPU Denial Of Service while accessing MMIO in lower power state

A flaw was found in Intel graphics hardware GPU where a local attacker with the ability to issue an ioctl could trigger a hardware level crash if MMIO registers were read while the graphics card was in a low-power state. This creates a denial of service situation and the GPU and connected display...

hw: Intel GPU Denial Of Service while accessing MMIO in lower power state

A flaw was found in Intel graphics hardware GPU where a local attacker with the ability to issue an ioctl could trigger a hardware level crash if MMIO registers were read while the graphics card was in a low-power state. This creates a denial of service situation and the GPU and connected display...

hw: Intel GPU Denial Of Service while accessing MMIO in lower power state

A flaw was found in Intel graphics hardware GPU where a local attacker with the ability to issue an ioctl could trigger a hardware level crash if MMIO registers were read while the graphics card was in a low-power state. This creates a denial of service situation and the GPU and connected display...

hw: Intel GPU blitter manipulation can allow for arbitrary kernel memory write

A flaw was found in the Intel graphics hardware GPU, where a local attacker with the ability to issue commands to the GPU could inadvertently lead to memory corruption and possible privilege escalation. The attacker could use the GPU blitter to perform privilege MMIO operations, not limited to th...

hw: Intel GPU Denial Of Service while accessing MMIO in lower power state

A flaw was found in Intel graphics hardware GPU where a local attacker with the ability to issue an ioctl could trigger a hardware level crash if MMIO registers were read while the graphics card was in a low-power state. This creates a denial of service situation and the GPU and connected display...

Kernel: KVM: OOB memory access via mmio ring buffer

An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvmcoalescedmmio' object, wherein write indices 'ring-first' and 'ring-last' value could be supplied by a host user-space...

Kernel: KVM: OOB memory access via mmio ring buffer

An out-of-bounds access issue was found in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvmcoalescedmmio' object, wherein write indices 'ring-first' and 'ring-last' value could be supplied by a host user-space...

Kernel: KVM: leak of uninitialized stack contents to guest

An information leakage issue was found in the way Linux kernel's KVM hypervisor handled page fault exceptions while emulating instructions like VMXON, VMCLEAR, VMPTRLD, and VMWRITE with memory address as an operand. It occurs if the operand is a mmio address, as the returned exception object hold...

USN-4163-2 linux-lts-xenial, linux-aws vulnerabilities

USN-4163-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement HWE kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 ESM. It was discovered that a race condition existed in the ARC EMAC ethernet driver for th...