CVE-2022-23824

A flaw was found in hw. The AMD CPUs can be attacked similar to the previously known Spectre Variant 2 CVE-2017-5715. This issue affects AMD CPUs where the OS relies on IBPB to flush the return address predictor. As a result, an unprivileged attacker could use this flaw to cross the syscall and...

CVE-2022-23824

IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure...

x86: Multiple speculative security issues

ISSUE DESCRIPTION 1 Researchers have discovered that on some AMD CPUs, the implementation of IBPB Indirect Branch Prediction Barrier does not behave according to the specification. Specifically, IBPB fails to properly flush the RAS Return Address Stack, also RSB - Return Stack Buffer - in Intel...

AMD: CVE-2022-23824 IBPB and Return Address Predictor Interactions

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KB5019966: Windows 10 version 1809 / Windows Server 2019 Security Update (November 2022)

The remote Windows host is missing security update 5019966. It is, therefore, affected by multiple vulnerabilities - AMD: CVE-2022-23824 IBPB and Return Address Predictor Interactions CVE-2022-23824 - Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability CVE-2022-37966 - Windows Kerberos...

AMD IBPB Return Branch Predictions Information Disclosure - Lenovo Support US

No description provided...

GSD-2022-1004554 x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported

x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.133 by commit...

GSD-2022-1004374 x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported

x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.57 by commit...

GSD-2022-1004149 x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported

x86/bugs: Do not enable IBPB-on-entry when IBPB is not supported This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.18.14 by commit...

Retbleed - arbitrary speculative code execution with return instructions

ISSUE DESCRIPTION Researchers at ETH Zurich have discovered Retbleed, allowing for arbitrary speculative execution in a victim context. For more details, see: https://comsec.ethz.ch/retbleed ETH Zurich have allocated CVE-2022-29900 for AMD and CVE-2022-29901 for Intel. Despite the similar...

Unbreakable Enterprise kernel-container security update

5.15.0-0.30.20 - floppy: use a statically allocated error counter Willy Tarreau Orabug: 34218638 CVE-2022-1652 - x86: Disable RET on kexec Konrad Rzeszutek Wilk Orabug: 34335631 CVE-2022-23816 CVE-2022-29901 - x86/bugs: do not enable IBPB-on-entry when IBPB is not supported Thadeu Lima de Souza...

Amazon Linux 2 : kernel (ALASKERNEL-5.4-2022-013)

The version of kernel installed on the remote host is prior to 5.4.50-25.83. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.4-2022-013 advisory. A logic bug flaw was found in the Linux kernel's implementation of SSBD. A bug in the logic handling allows a...

Slackware: Security Advisory (SSA:2018-208-01)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 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...

Virtuozzo ReadyKernel patch 123.0 for Virtuozzo Hybrid Server 7.0, 7.5, Virtuozzo Infrastructure Platform 3.0, and Virtuozzo Hybrid Infrastructure 3.5, 4.0

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7, Virtuozzo Infrastructure Platform, and Virtuozzo Hybrid Infrastructure. Vulnerability id: PSBM-126014 3.10.0-1127.18.2.vz7.163.46 The number of...

CVE-2020-10767

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation IBRS is available. This flaw allows a loc...

CVE-2020-10767

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation IBRS is available. This flaw allows a loc...

DEBIAN-CVE-2020-10767

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation IBRS is available. This flaw allows a loc...

Design/Logic Flaw

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation IBRS is available. This flaw allows a loc...

CVE-2020-10767

CVE-2020-10767 affects the Linux kernel before 5.8-rc1, where Enhanced IBPB mitigation is disabled when STIBP is unavailable or when IBRS is available, enabling a Spectre V2–style attack on local confidentiality. Connected advisories confirm Linux kernel mitigations (IBPB/SSBD) and note a patched...

CVE-2020-10767

A flaw was found in the Linux kernel before 5.8-rc1 in the implementation of the Enhanced IBPB Indirect Branch Prediction Barrier. The IBPB mitigation will be disabled when STIBP is not available or when the Enhanced Indirect Branch Restricted Speculation IBRS is available. This flaw allows a loc...