RHSA-2026:39297 Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

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RHSA-2026:36721 Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

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Astra Linux – Vulnerability in edk2

EDK2 contains a vulnerability in the BIOS, where an attacker may cause “Exposure of Sensitive Information to an Unauthorized Actor” through local access. Successful exploitation of this vulnerability could lead to possible information disclosure or escalation of privileges, thereby affecting...

Astra Linux – Vulnerability in Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: EFI: Fix for reserving unaccepted memory tables The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory tables. It aligns the size of the tables, but fails to take into...

Astra Linux – Vulnerability found in Linux 6.1, Linux 6.12

In the Linux kernel, the following vulnerability has been resolved: EFI/CPER: Do not dump the entire memory region. The current logic in cperprintfwerr does not check whether the length of the error record is sufficient to handle the offset. In a faulty firmware, if the offset is greater than the...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: RISCV: Kernel mappings of the EFI page table must be synchronized before switching to the EFI page table. The EFI page table is initially created as a copy of the kernel page table. When VMAPSTACK is enabled, kernel stacks are...

Vendor-signed UEFI applications found vulnerable to Secure Boot bypass

Overview Multiple vendor-signed UEFI applications are vulnerable to Secure Boot bypass via a "Bring Your Own Vulnerable Driver" BYOVD-style attack. If a target system trusts the affected vendor’s certificate, an attacker can exploit these applications to execute arbitrary code during the early...

CVE-2026-45656

Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally...

EUVD-2026-35696

Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally...

CVE-2026-45656

Protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally...

CVE-2026-45656 UEFI Secure Boot Security Feature Bypass Vulnerability

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PT-2026-48017

Name of the Vulnerable Software and Affected Versions Windows UEFI affected versions not specified Description A protection mechanism failure in Windows UEFI allows an authorized attacker to bypass a security feature locally. Recommendations At the moment, there is no information about a newer...

Microsoft Windows UEFI 处理逻辑错误漏洞

Microsoft Windows is an operating system used by personal devices by the American company Microsoft. There are security vulnerabilities in Microsoft Windows UEFI. Attackers can exploit these vulnerabilities to bypass certain features. The following products and versions are affected: Windows 11...

CVE-2026-46290

A flaw was found in the Linux kernel's x86/efi component. Due to changes in FPU softirq handling, the system incorrectly identifies normal task context as an interrupt context. This issue, when combined with buggy firmware that triggers page faults during EFI Extensible Firmware Interface runtime...

CVE-2026-48101

A flaw was found in 7-Zip. This uninitialized memory disclosure vulnerability exists in the UEFI capsule .scap parser. A remote attacker could exploit this by crafting a malicious .scap file, leading to the exposure of sensitive uninitialized heap memory as extracted file content. This could resu...

EUVD-2026-34854

7-Zip is a file archiver with a high compression ratio. Versions 9.21 through 26.00 contain an off-by-one out-of-bounds read vulnerability in the ParseDepedencyExpression function of the UEFI firmware image parserCPP/7zip/Archive/UefiHandler.cpp. The function validates an attacker-controlled opco...

SUSE CVE-2026-45851

In the Linux kernel, the following vulnerability has been resolved: efi: Fix reservation of unaccepted memory table The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory table. It aligns the size of the table, but fails to account for...

UBUNTU-CVE-2026-45851

In the Linux kernel, the following vulnerability has been resolved: efi: Fix reservation of unaccepted memory table The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory table. It aligns the size of the table, but fails to account for...

CVE-2026-45851

CVE-2026-45851 targets the Linux kernel EFI subsystem. The vulnerability arises in the reserve_unaccepted() memblock reservation: it aligns the table size but does not account for cases where the table’s start (efi.unaccepted) is not page-aligned. If the table begins mid-page and ends across the ...

CVE-2026-45851

In the Linux kernel, the following vulnerability has been resolved: efi: Fix reservation of unaccepted memory table The reserveunaccepted function incorrectly calculates the size of the memblock reservation for the unaccepted memory table. It aligns the size of the table, but fails to account for...