x86: speculative vulnerability in 32bit SYSCALL path

ISSUE DESCRIPTION Due to an oversight in the very original Spectre/Meltdown security work XSA-254, one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks. IMPACT An...

Important: kernel

Issue Overview: A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L...

Unbreakable Enterprise kernel security update

5.4.17-2136.317.5.3 - udf: Fix file corruption when appending just after end of preallocated extent Jan Kara Orabug: 35192150 - selftests/ftrace: Fix bash specific '==' operator Masami Hiramatsu Google Orabug: 35192150 - net: Fix unwanted sign extension in netdevstatstostats64 Felix Riemann Orabu...

Important: kernel

Issue Overview: A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-132)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-132 advisory. It has been discovered that on some AMD CPUs, the RAS Return Address Stack, also called RAP - Return Address Predictor - in some AMD documentation, and RSB - Return Stack Buffer - in Intel...

Important: kernel

Issue Overview: A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM L0 advertising eIBRS support to L1. An attacker at L...

Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-070)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2023-070 advisory. 2024-04-10: CVE-2023-0461 was added to this advisory. 2024-02-01: CVE-2024-0562 was added to this advisory. 2024-02-01: CVE-2022-48619 was added to this advisory. 2023-10-10: CVE-2023-3357 was...

CBL Mariner 2.0 Security Update: kernel (CVE-2022-3108)

The version of kernel installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2022-3108 advisory. - An issue was discovered in the Linux kernel through 5.16-rc6. kfdparsesubtypeiolink in...

Ubuntu 22.04 LTS : Linux kernel (Intel IoTG) vulnerabilities (USN-5962-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5962-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain...

Ubuntu 22.10 : Linux kernel (KVM) vulnerabilities (USN-5950-1)

The remote Ubuntu 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5950-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain...

SUSE SLED15: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2023:0692-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0692-1 advisory. - CVE-2022-27672: Fixed speculative execution vulnerability due to RAS being dynamically partitioned...

Ubuntu 22.04 LTS : Linux kernel (KVM) vulnerabilities (USN-5941-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5941-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain...

Malvertising through search engines

In recent months, we observed an increase in the number of malicious campaigns that use Google Advertising as a means of distributing and delivering malware. At least two different stealers, Rhadamanthys and RedLine, were abusing the search engine promotion plan in order to deliver malicious...

Ubuntu 22.04 LTS : Linux kernel (GKE) vulnerabilities (USN-5938-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5938-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain...

Missing Linux Kernel mitigations for 'RETbleed' hardware vulnerabilities (INTEL-SA-00702, AMD-SB-1037)

The remote host is missing one or more known mitigations on Linux Kernel side for the referenced SPDX-FileCopyrightText: 2023 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-onl...

GSD-2023-1002318 drm/amd/display: Adjust downscaling limits for dcn314

drm/amd/display: Adjust downscaling limits for dcn314 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 v6.1.13 by commit...

USN-5924-1 linux-azure, linux-azure, linux-azure vulnerabilities

It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain protocols, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execut...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-5911-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5911-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state in certain...

Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-5912-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5912-1 advisory. It was discovered that the Upper Level Protocol ULP subsystem in the Linux kernel did not properly handle sockets entering the LISTEN state i...

CVE-2022-27672

A flaw was found in HW. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch, potentially resulting in information disclosure. Mitigation The current mitigations for spectre V4 or spectrev2 should mitiga...