LSN-0086-1 Kernel Live Patch Security Notice

It was discovered that a race condition existed in the network scheduling subsystem of the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service system crash or possibly execute arbitrary code.CVE-2021-39713 Yiqi Sun and Kevin Wang...

CVE-2020-10713

A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to load an untrusted or modified kernel, an attacker would first need to establish access...

May 10, 2022—KB5013952 (OS Build 14393.5125) - EXPIRED

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KB5014026: Servicing stack update for Windows 10, version 1607 and Server 2016: May 10, 2022

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CVE-2021-4034

A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters coun...

April 25, 2022—KB5012637 (OS Build 20348.681) Preview

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CVE-2021-3972

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

CVE-2021-3972

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

CVE-2021-3972

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

Design/Logic Flaw

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

CVE-2021-3972

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

CVE-2021-3972: Active Debug Code

A potential vulnerability by a driver used during manufacturing process on some consumer Lenovo Notebook devices' BIOS that was mistakenly not deactivated may allow an attacker with elevated privileges to modify secure boot setting by modifying an NVRAM variable...

Cisco Catalyst Digital Building Series Switches and Cisco Catalyst Micro Switches Vulnerabilities (cisco-sa-cdb-cmicr-vulns-KJjFtNb)

According to its self-reported version, Cisco Catalyst Digital Building Series Switches and Cisco Catalyst Micro Switches Vulnerabilities is affected by the following vulnerabilities: - A denial of service DoS vulnerability exists in the boot loader. An unauthenticated, physical attacker can...

Lenovo issues fixes for laptop backdoors

Researchers have discovered three vulnerabilities affecting various Lenovo consumer laptop models. The vulnerabilities were found in UEFI firmware drivers originally meant to be used only during the manufacturing process, along with a vulnerability in the SW SMI handler function. The list of...

April 21, 2022—KB5012636 (OS Build 17763.2867) Preview

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April 21, 2022 Servicing stack update (KB5012676)

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The vulnerability of the ChgBootDxeHook driver in Lenovo notebook BIOS microprogramming software allows a malicious actor to execute malicious drivers and applications during the boot process.

The vulnerability of the ChgBootDxeHook driver in Lenovo notebook BIOS microprogramming software relates to the possibility of modifying security boot settings by editing the NVRAM variable. Exploiting this vulnerability allows a hacker to execute malicious drivers and applications during the boo...

New Lenovo UEFI Firmware Vulnerabilities Affect Millions of Laptops

Three high-impact Unified Extensible Firmware Interface UEFI security vulnerabilities have been discovered impacting various Lenovo consumer laptop models, enabling malicious actors to deploy and execute firmware implants on the affected devices. Tracked as CVE-2021-3970, CVE-2021-3971, and...

PT-2022-2320

Name of the Vulnerable Software and Affected Versions Lenovo Notebook devices affected versions not specified Description A potential issue with a driver used in the manufacturing process of some Lenovo Notebook devices' BIOS may allow an attacker with elevated privileges to modify secure boot...

Lenovo Notebook 安全漏洞

Lenovo Notebook is a laptop computer from Lenovo, a Chinese company. A security vulnerability exists in Lenovo Notebook that originates from the use of an incorrect driver that is incorrectly not deactivated. A local privileged user can modify the secure boot settings and bypass the implemented...