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-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-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...

USN-5210-2: Linux kernel regression | Cloud Foundry

Severity Unknown Vendor Canonical Ubuntu Versions Affected Canonical Ubuntu 18.04 Description USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused failures to boot in environments with AMD Secure Encrypted Virtualization SEV enabled...

USN-5210-2: Linux kernel regression

USN-5210-1 fixed vulnerabilities in the Linux kernel. Unfortunately, that update introduced a regression that caused failures to boot in environments with AMD Secure Encrypted Virtualization SEV enabled. This update fixes the problem. We apologize for the inconvenience. Original advisory details:...

Researchers Discover UEFI Bootkit Targeting Windows Computers Since 2012

Cybersecurity researchers on Tuesday revealed details of a previously undocumented UEFI Unified Extensible Firmware Interface bootkit that has been put to use by threat actors to backdoor Windows systems as early as 2012 by modifying a legitimate Windows Boot Manager binary to achieve persistence...

Ubuntu: Security Advisory (USN-4992-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2021 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...

OPENSUSE-SU-2021:0540-1 Security update for openSUSE KMPs

This update for various openSUSE kernel related packages refreshes them with the new UEFI Secure boot key...

Security update for openSUSE KMPs (moderate)

openSUSE Security Update: Security update for openSUSE KMPs Announcement ID: openSUSE-SU-2021:0540-1 Rating: moderate References: 1174543 Affected Products: openSUSE Leap 15.2 An update that contains security fixes can now be installed. Description: This update for various openSUSE kernel related...

Design/Logic Flaw

A component of Kaspersky custom boot loader allowed loading of untrusted UEFI modules due to insufficient check of their authenticity. This component is incorporated in Kaspersky Rescue Disk KRD and was trusted by the Authentication Agent of Full Disk Encryption in Kaspersky Endpoint Security KES...

dbxtool bug fix and enhancement update

An update is available for dbxtool. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The dbxtool packages provide a command line utility and a one-shot systemd...

dbxtool bug fix and enhancement update

The dbxtool packages provide a command line utility and a one-shot systemd service for applying UEFI Secure Boot DBX updates. Bug Fixes and Enhancements: Dell AlmaLinux 8.2 BUG dbxtool: fails to list with 'EFI Signature List is malformed' BZ1912474...

ALBA-2021:0564 dbxtool bug fix and enhancement update

The dbxtool packages provide a command line utility and a one-shot systemd service for applying UEFI Secure Boot DBX updates. Bug Fixes and Enhancements: Dell AlmaLinux 8.2 BUG dbxtool: fails to list with 'EFI Signature List is malformed' BZ1912474...

CVE-2019-1736

A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface UEFI Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improp...

Input validation

A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface UEFI Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improp...

CVE-2019-1736 Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability

A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface UEFI Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improp...

CVE-2019-1736

Cisco UCS C-Series Rack Servers are affected by a UEFI Secure Boot bypass vulnerability (CVE-2019-1736) arising from improper validation of server firmware upgrade images. An authenticated, physical attacker could install a firmware version that disables UEFI Secure Boot, bypasses signature valid...

On Drovorub: Linux Kernel Security Best Practices | McAfee Blogs

ARCHIVED STORY On Drovorub: Linux Kernel Security Best Practices By ATR Operational Intelligence Team/b · AUG 13, 2020 Intro In a U.S. government cyber security advisory released today, the National Security Agency and Federal Bureau of Investigation warn of a previously undisclosed piece of Linu...

On Drovorub: Linux Kernel Security Best Practices | McAfee Blogs

ARCHIVED STORY On Drovorub: Linux Kernel Security Best Practices By ATR Operational Intelligence Team/b · AUG 13, 2020 Intro In a U.S. government cyber security advisory released today, the National Security Agency and Federal Bureau of Investigation warn of a previously undisclosed piece of Linu...

Intel® Thunderbolt™ Controller Advisory

Summary: A potential security vulnerability in some Intel® Thunderbolt™ controllers may allow information disclosure. Intel is releasing prescriptive guidance to mitigate this potential vulnerability. Vulnerability Details: CVEID: CVE-2019-14630 Description: Reliance on untrusted inputs in a...