Ubuntu EDK2 安全漏洞

Ubuntu EDK2 is an open source firmware development kit for Ubuntu. A security vulnerability exists in Ubuntu edk2 that stems from the Secure Boot environment that allows access to the UEFI Shell, which could lead to Secure Boot constraints being bypassed...

November 20, 2025—KB5070312 (OS Build 22631.6276) Preview

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CVE-2025-61663

A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service DoS risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this comman...

CVE-2025-54770

A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service DoS risk. This flaw is a Use-after-Free issue, caused because the netsetvlan command is not properly unregistered when the network module is unloaded from memory. An attacker who...

CVE-2025-61664

A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normalexit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after...

CVE-2025-54771

A use-after-free vulnerability has been identified in the GNU GRUB Grand Unified Bootloader. The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub t...

CVE-2025-61662

A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the applicati...

CVE-2025-61661

A vulnerability has been identified in the GRUB Grand Unified Bootloader component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a malicious...

November 18, 2025—KB5072359 (OS Build 26100.7178) Out-of-band

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kernel: efi: Do not import certificates from UEFI Secure Boot for T2 Macs

In the Linux kernel, the following vulnerability has been resolved: efi: Do not import certificates from UEFI Secure Boot for T2 Macs On Apple T2 Macs, when Linux attempts to read the db and dbx efi variables at early boot to load UEFI Secure Boot certificates, a page fault occurs in Apple firmwa...

grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write.

A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grubgettextgetstrfromposition may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the...

KB5071813: Servicing stack update for Windows Server 2012: November 11, 2025

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KB5068783: Servicing stack update for Windows Server 2012 R2: November 11, 2025

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KB5070247: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: November 11, 2025

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CVE-2025-27374

An issue was discovered in the Secure Boot component in Samsung Mobile Processor and Wearable Processor Exynos 9820, 9825, 980, 990, 850, 1080, 1280, 2200, 1330, 1380, 1480, 2400. The lack of a length check leads to out-of-bounds writes...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-989537)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989537 advisory. In the Linux kernel, the following vulnerability has been resolved: efi: Do not import certificates from UEFI Secure Boot for T2 Macs On Apple T2 Macs, when Linux...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989406)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989406 advisory. In the Linux kernel, the following vulnerability has been resolved: efi: Do not import certificates from UEFI Secure Boot for T2 Macs On Apple T2 Macs, when Linux...

CVE-2025-27374

An issue was discovered in the Secure Boot component in Samsung Mobile Processor and Wearable Processor Exynos 9820, 9825, 980, 990, 850, 1080, 1280, 2200, 1330, 1380, 1480, 2400. The lack of a length check leads to out-of-bounds writes...

CVE-2025-27374

A security vulnerability exists in the Secure Boot component of several Samsung Mobile and Wearable Processors , including the Exynos 9820, 9825, 980, 990, 850, 1080, 1280, 2200, 1330, 1380, 1480, and 2400 models. The root cause is a lack of a length check , which can lead to out-of-bounds writes...

SAMSUNG多款产品 安全漏洞

SAMSUNG Exynos 980 and others are products of the South Korean company Samsung SAMSUNG.SAMSUNG Exynos 980 is a first 5G integrated Soc product and the world's first A77 architecture processor.SAMSUNG Exynos 990 is a mobile processor.SAMSUNG Exynos 850 is a mobile SAMSUNG Exynos 850 is a mobile...