DEBIAN-CVE-2025-0685

A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly crafted filesystem may lead some o...

AZL-57669 CVE-2025-0678 affecting package grub2 for versions less than 2.06-15

A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs 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 filesystem may lead some ...

DEBIAN-CVE-2024-45778

A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash...

CVE-2024-45778

A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash...

AZL-57551 CVE-2025-0689 affecting package grub2 for versions less than 2.06-15

When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size whi...

DEBIAN-CVE-2024-45779

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

AZL-57492 CVE-2024-45780 affecting package grub2 for versions less than 2.06-25

A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap...

Important Photon OS Security Update - PHSA-2025-5.0-91-0481

Updates of 'grub2' packages of Photon OS have been released...

The vulnerability of the grub_extcmd_dispatcher() function of the Grub2 operating system allows a hacker to cause a service failure.

The vulnerability of the grubextcmddispatcher function of the Grub2 operating system is related to an improper check of the returned value from the function. Exploiting this vulnerability could allow an attacker to cause a service failure...

AZL-57159 CVE-2025-0690 affecting package grub2 for versions less than 2.06-15

The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to...

AZL-57150 CVE-2025-0690 affecting package grub2 for versions less than 2.06-25

The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to...

Medium: grub2

Issue Overview: GNU GRUB aka GRUB2 through 2.12 has a heap-based buffer overflow in fs/hfs.c via crafted sblock data in an HFS filesystem. CVE-2024-56737 Affected Packages: grub2 Issue Correction: Run dnf update grub2 --releasever 2023.6.20250218 or dnf update --advisory ALAS2023-2025-847...

SUSE CVE-2024-45776

When reading the language .mo file in grubmofileopen, grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data o...

SUSE CVE-2024-45781

A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure...

SUSE CVE-2025-0624

A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grubstrcpy function. During this step, it fails to consider the environment variable length...

AZL-56919 CVE-2025-0677 affecting package grub2 for versions less than 2.06-15

A flaw was found in grub2. When performing a symlink lookup, the grub's UFS module checks the inode's data size to allocate the internal buffer to read the file content, however, it fails to check if the symlink data size has overflown. When this occurs, grubmalloc may be called with a smaller...

DEBIAN-CVE-2025-0677

A flaw was found in grub2. When performing a symlink lookup, the grub's UFS module checks the inode's data size to allocate the internal buffer to read the file content, however, it fails to check if the symlink data size has overflown. When this occurs, grubmalloc may be called with a smaller...

AZL-57049 CVE-2025-0624 affecting package grub2 for versions less than 2.06-24

A flaw was found in grub2. During the network boot process, when trying to search for the configuration file, grub copies data from a user controlled environment variable into an internal buffer using the grubstrcpy function. During this step, it fails to consider the environment variable length...

AZL-56901 CVE-2024-45777 affecting package grub2 for versions less than 2.06-15

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...

CVE-2024-45777

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...