kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

A flaw was found in the way the Linux kernel implemented a software flush of the Count Cache indirect branch cache and Link Return Address Stack on the PowerPC platform. The flushing of these structures helps to prevent SpectreRSB like attacks which may leak information from one user process to...

New Noise-Resilient Attack On Intel and AMD CPUs Makes Flush-based Attacks Effective

Modern Intel and AMD processors are susceptible to a new form of side-channel attack that makes flush-based cache attacks resilient to system noise, newly published research shared with The Hacker News has revealed. The findings are from a paper "DABANGG: Time for Fearless Flush based Cache...

Huawei Data Communication: CPU Vulnerabilities 'Meltdown' and 'Spectre' (huawei-sa-20180606-01-cpu)

Security researchers disclosed two groups of CPU vulnerabilities Copyright C 2020 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...

Unbreakable Enterprise kernel security update

4.14.35-1902.302.2 - KVM: x86: Protect pmuintel.c from Spectre-v1/L1TF attacks Marios Pomonis Orabug: 31191092 - KVM: x86: Protect MSR-based index computations in fixedmsrtosegunit from Spectre-v1/L1TF attacks Marios Pomonis Orabug: 31191092 - KVM: x86: Protect x86decodeinsn from Spectre-v1/L1TF...

gcc security and bug fix update

8.3.1-5.0.3 - Fix Orabug 29838827 - provide an option to adjust the maximum depth of nested include This is the same bug as gcc upstream PR90581 from Gcc9: gcc9-pr90581.patch - Fix Orabug 29541051 - confusing error message when there is a problem with ASANOPTIONS 'ERROR: expected '='' This is the...

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

An update for kernel is now available for Red Hat Enterprise Linux 7.7 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RHEL 7 : kernel (RHSA-2020:1984)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:1984 advisory. The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: powerpc: incomplete Spectre-RSB...

CentOS 7 : kernel (RHSA-2020:1016)

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:1016 advisory. - In the Linux kernel before 4.1.4, a buffer overflow occurs when checking userspace params in drivers/media/dvb-frontends/cx24116.c. The maximum size...

CVE-2019-7308

A bypass was found for the Spectre v1 hardening in the eBPF engine of the Linux kernel. The code in the kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize,...

bpftool, kernel, perf, python security update

CentOS Errata and Security Advisory CESA-2020:1016 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 Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

A flaw was found in the way the Linux kernel implemented a software flush of the Count Cache indirect branch cache and Link Return Address Stack on the PowerPC platform. The flushing of these structures helps to prevent SpectreRSB like attacks which may leak information from one user process to...

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

An update for kernel is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the...

CVE-2018-15594

It was found that paravirtpatchcall/jump functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests...

CVE-2019-9793

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully...

CVE-2020-0551

A flaw was found in Intel's microprocessors. Intel microprocessors contain an implementation weakness that allows for an 'inverse MDS' style attack to be performed during store operations writes to memory and are stuffed maliciously into microarchitectural buffers from which unsuspecting victim...

CVE-2019-9815

If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main...

kernel: powerpc: incomplete Spectre-RSB mitigation leads to information exposure

A flaw was found in the way the Linux kernel implemented a software flush of the Count Cache indirect branch cache and Link Return Address Stack on the PowerPC platform. The flushing of these structures helps to prevent SpectreRSB like attacks which may leak information from one user process to...

VMware ESXi 5.5 / 6.0 / 6.5 / 6.7 Information Disclosure (VMSA-2018-0012) (Spectre) (remote check)

The remote VMware ESXi host is version 5.5, 6.0, 6.5, or 6.7 and is missing a security patch. It is, therefore, vulnerable to an information disclosure vulnerability. The vulnerability exists in the speculative execution control mechanism. An unauthenticated, local attacker can exploit this, via...

Debian DLA-2148-1 : amd64-microcode security update (Spectre)

It was discovered that systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis Spectre v2. Multiple fixes were done already in Linux kernel,...

Debian: Security Advisory (DLA-2148-1)

The remote host is missing an update for the Debian SPDX-FileCopyrightText: 2020 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...