Astra Linux – Vulnerability in grub2

A flaw was discovered in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered them was unloaded, resulting in a use-after-free vulnerabilit...

Astra Linux – Vulnerability in grub2

Out-of-bounds write when handling split HTTP headers: When dealing with split HTTP headers, GRUB2’s HTTP code accidentally moves its internal data buffer point by one position. This can lead to an out-of-bounds write during the parsing of the HTTP request, resulting in writing a NULL byte beyond...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2, where its configuration file, known as grub.cfg, is created with the wrong permission set, allowing non-privileged users to read its contents. This represents a minor confidentiality issue, as those users could potentially access any encrypted passwords contained i...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. Variable names present in the supplied command line are expanded into their corresponding variable contents, using a 1 kB stack buffer for temporary storage. However, there is insufficient bounds checking. If the function is called with a...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read without sufficient bounds checking, assuming that the USB device provides valid values. If exploited properly, an attacker could cause memory corruption, leading to arbitrary code...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When performing a symlink lookup from a romfs filesystem, grub’s romfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size. However, it improperly checks for integer overflows. A maliciously crafted...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When reading data from a squash4 filesystem, grub’s squash4 fs module uses user-controlled parameters from the filesystem’s geometry to determine the internal buffer size. However, it improperly checks for integer overflows. A maliciously crafted filesystem may cau...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When performing a symlink lookup, the grub’s UFS module checks the data size of the inode to allocate an internal buffer to read the file content. However, it fails to check whether the data size of the symlink has exceeded its allocated limit. As a result, the...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. The dump command of grub is not blocked when grub is in lockdown mode, which allows the user to read any memory information. An attacker could exploit this vulnerability to extract signatures, salts, and other sensitive information from the memory...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2 in versions prior to 2.06, where it incorrectly enabled the use of the ACPI command when Secure Boot was enabled. This flaw allows an attacker with privileged access to create a Secondary System Description Table SSDT containing code that can overwrite the Linux...

Astra Linux – Vulnerability in grub2

A out-of-bounds write flaw was discovered in grub2’s NTFS filesystem driver. This issue may allow an attacker to present a specially crafted NTFS filesystem image, resulting in corruption of grub’s heap metadata. In some cases, the attack may also corrupt the UEFI firmware heap metadata. As a...

Astra Linux – Vulnerability in grub2

An integer overflow flaw was discovered in the BFS file system driver within grub2. When reading a file using an indirect extent map, grub2 fails to validate the number of extent entries to be read. A maliciously crafted or corrupted BFS file system may cause an integer overflow during file...

Photon OS 5.0: Grub2 PHSA-2026-5.0-90-0742

An update of the grub2 package has been released. %NASLMINLEVEL 80900 C Tenable, Inc. The descriptive text and package checks in this plugin were extracted from VMware Security Advisory PHSA-2026-5.0-90-0742. The text itself is copyright C VMware, Inc. include'compat.inc'; if description...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. When reading the name of a symbolic link from a UFS filesystem, grub2 fails to validate the string length provided as input. This lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and potentially allowing an attacker to...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. A specially crafted JPEG file can cause the JPEG parser in grub2 to incorrectly check the boundaries of its internal buffers, leading to an out-of-bounds write. The possibility of overwriting sensitive information to bypass secure boot protections is still a concer...

Astra Linux – Vulnerability in grub2

A stack overflow flaw was discovered while reading a BFS file system. A specially crafted BFS file system may lead to an uncontrolled loop, causing grub2 to crash...

Astra Linux – Vulnerability in grub2

A flaw was discovered in grub2. The calculation of the translation buffer when reading a language .mo file in grubgettextgetstrfromposition may overflow, resulting in an out-of-bound write. This issue can be exploited by an attacker to overwrite grub2’s sensitive heap data, ultimately allowing th...

Security Bulletin: Vulnarability in grub2 library (CVE-2025-61662) affects Power HMC.

Summary The grub2 library is used by Power Hardware Management Console HMC. HMC has addressed the applicable CVE. Vulnerability Details CVEID:CVE-2025-61662 DESCRIPTION: A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the...

EulerOS Virtualization 2.13.0 : grub2 (EulerOS-SA-2026-2169)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A use-after-free vulnerability has been identified in the GNU GRUB Grand Unified Bootloader. The flaw occurs because the file-closin...

EulerOS Virtualization 2.13.1 : grub2 (EulerOS-SA-2026-2130)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : A use-after-free vulnerability has been identified in the GNU GRUB Grand Unified Bootloader. The flaw occurs because the file-closin...