grub2: shim_lock verifier allows non-kernel files to be loaded

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

grub2: Crafted PNG image may lead to out-of-bound write during huffman table handling

A flaw was found in grub2 when handling a PNG image header. When decoding the data contained in the Huffman table at the PNG file header, an out-of-bounds write may happen on grub's heap...

grub2: Crafted JPEG image can lead to buffer underflow write in the heap

A flaw was found in grub2 when handling JPEG images. This flaw allows an attacker to craft a malicious JPEG image, which leads to an underflow on a grub2's internal pointer, leading to a heap-based out-of-bounds write. Secure-boot mechanisms circumvention and arbitrary code execution may also be...

Important: Red Hat Security Advisory: grub2, mokutil, shim, and shim-unsigned-x64 security update

An update for grub2, mokutil, shim, and shim-unsigned-x64 is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

grub2: shim_lock verifier allows non-kernel files to be loaded

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

grub2: Crafted JPEG image can lead to buffer underflow write in the heap

A flaw was found in grub2 when handling JPEG images. This flaw allows an attacker to craft a malicious JPEG image, which leads to an underflow on a grub2's internal pointer, leading to a heap-based out-of-bounds write. Secure-boot mechanisms circumvention and arbitrary code execution may also be...

grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap

A flaw was found in grub 2, where a crafted 16-bit grayscale PNG image may lead to an out-of-bounds write. This flaw allows an attacker to corrupt the data on the heap portion of the grub2's memory, leading to possible code execution and the circumvention of the secure boot mechanism...

grub2: Crafted JPEG image can lead to buffer underflow write in the heap

A flaw was found in grub2 when handling JPEG images. This flaw allows an attacker to craft a malicious JPEG image, which leads to an underflow on a grub2's internal pointer, leading to a heap-based out-of-bounds write. Secure-boot mechanisms circumvention and arbitrary code execution may also be...

grub2: shim_lock verifier allows non-kernel files to be loaded

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap

A flaw was found in grub 2, where a crafted 16-bit grayscale PNG image may lead to an out-of-bounds write. This flaw allows an attacker to corrupt the data on the heap portion of the grub2's memory, leading to possible code execution and the circumvention of the secure boot mechanism...

grub2: shim_lock verifier allows non-kernel files to be loaded

A flaw was found in grub2. The shimlock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed...

grub2: Crafted JPEG image can lead to buffer underflow write in the heap

A flaw was found in grub2 when handling JPEG images. This flaw allows an attacker to craft a malicious JPEG image, which leads to an underflow on a grub2's internal pointer, leading to a heap-based out-of-bounds write. Secure-boot mechanisms circumvention and arbitrary code execution may also be...

grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap

A flaw was found in grub 2, where a crafted 16-bit grayscale PNG image may lead to an out-of-bounds write. This flaw allows an attacker to corrupt the data on the heap portion of the grub2's memory, leading to possible code execution and the circumvention of the secure boot mechanism...

SUSE-SU-2022:2104-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP2 kernel was updated. The following security bugs were fixed: - CVE-2022-0168: Fixed a NULL pointer dereference in smb2ioctlqueryinfo. bsc1197472 - CVE-2022-1966: Fixed an use-after-free bug in the netfilter subsystem. This flaw allowed a local attacker with user...

grub2, mokutil, shim, and shim-unsigned-x64 security update

An update is available for shim, mokutil. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The grub2 packages provide version 2 of the Grand Unified Boot Loader...

grub2, mokutil, shim, and shim-unsigned-x64 security update

An update is available for grub2, shim, shim-unsigned-x64, mokutil. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The grub2 packages provide version 2 of the...

RLSA-2022:5095 Important: grub2, mokutil, shim, and shim-unsigned-x64 security update

The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. The shim package contains a...

Authentication Bypass

grub2 is vulnerable to authentication bypass. The vulnerability exists because the shimlock verifier allows non-kernel files to be loaded on shim-powered secure boot systems, allowing an attacker to load unverified modules into GRUB and bypass secure boot protection mechanism...

Important: grub2, mokutil, shim, and shim-unsigned-x64 security update

The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. The shim package contains a...

ALSA-2022:5099 Important: grub2, mokutil, shim, and shim-unsigned-x64 security update

The grub2 packages provide version 2 of the Grand Unified Boot Loader GRUB, a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices. The shim package contains a...