USN-5485-1: Linux kernel vulnerabilities

It was discovered that some Intel processors did not completely perform cleanup actions on multi-core shared buffers. A local attacker could possibly use this to expose sensitive information. CVE-2022-21123 It was discovered that some Intel processors did not completely perform cleanup actions on...

CVE-2022-1158

A flaw was found in KVM. When updating a guest's page table entry, vmpgoff was improperly used as the offset to get the page's pfn. As vaddr and vmpgoff are controllable by user-mode processes, this flaw allows unprivileged local users on the host to write outside the userspace region and...

Unbreakable Enterprise kernel security update

5.4.17-2136.308.9 - x86/speculation/mmio: Fix late microcode loading Patrick Colp Orabug: 34276099 5.4.17-2136.308.8 - Add debugfs for controlling MMIO state data Kanth Ghatraju Orabug: 34202259 CVE-2022-21123 CVE-2022-21127 CVE-2022-21125 CVE-2022-21166 - KVM: x86/speculation: Disable Fill buffe...

Updated kernel packages fix security vulnerabilities

This kernel update is based on upstream 5.15.46 and fixes at least the following security issues: KVM: x86: avoid calling x86 emulator without a decoded instruction CVE-2022-1852. A use-after-free vulnerability was found in the Linux kernel's Netfilter subsystem in net/netfilter/nftablesapi.c. Th...

Updated kernel-linus packages fix security vulnerabilities

This kernel-linus update is based on upstream 5.15.46 and fixes at least the following security issues: KVM: x86/mmu: fix NULL pointer dereference on guest INVPCID CVE-2022-1789. KVM: x86: avoid calling x86 emulator without a decoded instruction CVE-2022-1852. A use-after-free vulnerability was...

Moderate: Red Hat Security Advisory: virt:av and virt-devel:av security and bug fix update

An update for the virt:av and virt-devel:av modules is now available for Red Hat Enterprise Linux Advanced Virtualization 8.4 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, whi...

Amazon Linux 2 : kernel (ALASKERNEL-5.15-2022-001)

The version of kernel installed on the remote host is prior to 5.15.43-20.123. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2022-001 advisory. A flaw was found in unrestricted eBPF usage by the BPFBTFLOAD, leading to a possible out-of-bounds memory...

Important: kernel

Issue Overview: A flaw was found in the Linux kernel in linux/net/netfilter/nftablesapi.c of the netfilter subsystem. This flaw allows a local user to cause an out-of-bounds write issue. CVE-2022-1015 A flaw was found in the Linux kernel in net/netfilter/nftablescore.c:nftdochain, which can cause...

Ubuntu: Security Advisory (USN-5467-1)

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...

USN-5469-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. CVE-2022-21499 Aaron Adams discovered that the netfilter subsystem in the Linux...

USN-5469-1 linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-oracle, linux-raspi vulnerabilities

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. CVE-2022-21499 Aaron Adams discovered that the netfilter subsystem in the Linux...

USN-5468-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. CVE-2022-21499 Aaron Adams discovered that the netfilter subsystem in the Linux...

USN-5467-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. CVE-2022-21499 Aaron Adams discovered that the netfilter subsystem in the Linux...

USN-5465-1: Linux kernel vulnerabilities

It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged attacker could use this to bypass UEFI Secure Boot restrictions. CVE-2022-21499 Aaron Adams discovered that the netfilter subsystem in the Linux...

Ubuntu 18.04 LTS / 20.04 LTS : Linux kernel vulnerabilities (USN-5467-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5467-1 advisory. It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A...

Ubuntu 22.04 LTS : Linux kernel vulnerabilities (USN-5469-1)

The remote Ubuntu 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5469-1 advisory. It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged...

Ubuntu 20.04 LTS : Linux kernel vulnerabilities (USN-5468-1)

The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5468-1 advisory. It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A privileged...

CLSA-2022-1654537694 Fixed CVE-2021-3975 in qemu-kvm-60.module_el8.5.0+2049+9e40c7b1.2

CVE-2021-3975: Fix a use-after-free flaw which can be triggered during VM shutdown...

kvm_utils security update

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CVE-2022-1789

With shadow paging enabled, the INVPCID instruction results in a call to kvmmmuinvpcidgva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference...