Important Photon OS Security Update - PHSA-2025-5.0-90-0477

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

DEBIAN-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...

AZL-56928 CVE-2024-45776 affecting package grub2 for versions less than 2.06-15

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...

CVE-2024-45783

A flaw was found in grub2. When failing to mount an HFS+ grub, the hfsplus filesystem driver doesn't properly set an ERRNO value. This issue may lead to a NULL pointer access...

AZL-56989 CVE-2024-45776 affecting package grub2 for versions less than 2.06-25

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...

AZL-56937 CVE-2024-45775 affecting package grub2 for versions less than 2.06-15

A flaw was found in grub2 where the grubextcmddispatcher function calls grubarglistalloc to allocate memory for the grub's argument list. However, it fails to check in case the memory allocation fails. Once the allocation fails, a NULL point will be processed by the parseoption function, leading...

UBUNTU-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...

UBUNTU-CVE-2025-1118

A flaw was found in grub2. Grub's dump command is not blocked when grub is in lockdown mode, which allows the user to read any memory information, and an attacker may leverage this in order to extract signatures, salts, and other sensitive information from the memory...

UBUNTU-CVE-2024-45783

A flaw was found in grub2. When failing to mount an HFS+ grub, the hfsplus filesystem driver doesn't properly set an ERRNO value. This issue may lead to a NULL pointer access...

UBUNTU-CVE-2024-49504

grub2 allowed attackers with access to the grub shell to access files on the encrypted disks...

PT-2024-8699 · Grub2 +2 · Grub2 +2

Name of the Vulnerable Software and Affected Versions: grub2 affected versions not specified Description: The issue is related to grub2, where attackers with access to the grub shell can access files on encrypted disks. This is due to incorrectly used standard permissions. Exploitation of the iss...

CLSA-2024-1724871398 grub2: Fix of CVE-2023-4693

CVE-2023-4693: ntfs: fix an out-of-bounds read flaw on NTFS filesystem driver...

CLSA-2024-1723060343 Update of grub2

Update version and epoch...

CLSA-2024-1721204990 Update of kernel

Add dependency for updated shim and grub2 with new signing key...

grub2: grub2-set-bootflag can be abused by local (pseudo-)users

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not ...

grub2: Out-of-bounds write at fs/ntfs.c may lead to unsigned code execution

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

grub2: out-of-bounds read at fs/ntfs.c

An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations. A successful attack allows sensitive data cached in memory or EFI variable values to...

grub2: Out-of-bounds write at fs/ntfs.c may lead to unsigned code execution

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

CLSA-2024-1713864372 Update of grub2

Improve Xen detection so we don't set GRUBENABLEBLSCFG=false for HVM domU guests...

SUSE CVE-2024-2312

GRUB2 does not call the module fini functions on exit, leading to Debian/Ubuntu's peimage GRUB2 module leaving UEFI system table hooks after exit. This lead to a use-after-free condition, and could possibly lead to secure boot bypass...