Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an unnamed resource allocation that could cause critical boot hangs...

MiracleLinux 3 : kernel-2.6.18-308.3.AXS3 (AXSA:2012-550:04)

The remote MiracleLinux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2012-550:04 advisory. The kernel package contains the Linux kernel vmlinuz, the core of any Linux operating system. The kernel handles the basic functions of the operating...

CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

UBUNTU-CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2026-21265 Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

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CVE-2026-21265

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

CVE-2026-21265 Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

...

CVE-2026-21265

CVE-2026-21265 describes a Secure Boot bypass tied to expiration of Microsoft root certificates in the UEFI KEK/DB chain. Affected certificates include KEK CA 2011 (expires 2026-06-24), UEFI CA 2011 (expires 2026-06-27), and Windows Production PCA 2011 (expires 2026-10-19). The vulnerability aris...

CVE-2025-71067

In the Linux kernel, the following vulnerability has been resolved: ntfs: set dummy blocksize to read bootblock when mounting When mounting, sb-sblocksize is used to read the bootblock without being defined or validated. Set a dummy blocksize before attempting to read the bootblock. The issue can...

CVE-2025-71067

In the Linux kernel, the following vulnerability has been resolved: ntfs: set dummy blocksize to read bootblock when mounting When mounting, sb-sblocksize is used to read the bootblock without being defined or validated. Set a dummy blocksize before attempting to read the bootblock. The issue can...

UBUNTU-CVE-2025-71067

In the Linux kernel, the following vulnerability has been resolved: ntfs: set dummy blocksize to read bootblock when mounting When mounting, sb-sblocksize is used to read the bootblock without being defined or validated. Set a dummy blocksize before attempting to read the bootblock. The issue can...

January 13, 2026—KB5073450 (OS Build 25398.2092)

January 13, 2026—KB5073450 OS Build 25398.2092 This cumulative update for Windows Server, version 23H2 KB5073450, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security...

January 13, 2026—KB5073698 (Monthly Rollup)

January 13, 2026—KB5073698 Monthly Rollup Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows Server 2012. For a successful installation, please make sure all Subset of endpoints for ESU only...

January 13, 2026—KB5073457 (OS Build 20348.4648)

January 13, 2026—KB5073457 OS Build 20348.4648 This cumulative update for Windows Server 2022 KB5073457, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security updates,...

January 13, 2026—KB5073695 (Monthly Rollup)

January 13, 2026—KB5073695 Monthly Rollup Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the past...

January 13, 2026—KB5073455 (OS Build 22631.6491)

January 13, 2026—KB5073455 OS Build 22631.6491 ​​​​​This cumulative update for Windows 11, version 23H2 KB5073455, includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. To learn more about differences between security...

Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

January 13, 2026—KB5073723 (OS Build 17763.8276)

January 13, 2026—KB5073723 OS Build 17763.8276 Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed business devices for the pa...