Protection Bypass

The Linux kernel is vulnerable to Protection Bypass. It does not properly enforce the Secure Boot Forbidden Signature Database aka dbx protection mechanism. This affects certs/blacklist.c and certs/systemkeyring.c. A flaw was found in the Linux kernel in certs/blacklist.c, When signature entries...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

DEBIAN-CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

ALPINE-CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

UBUNTU-CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

Design/Logic Flaw

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

CVE-2021-28693

CVE-2021-28693 (Xen ARM): The boot modules (e.g., kernel, initramfs) loaded by the Xen bootloader are not scrubbed in Arm environments, risking leakage of sensitive data from modules when handed to domain memory. The issue originates from the boot path not scrubbed before copying to domain memory...

CVE-2021-28693

xen/arm: Boot modules are not scrubbed The bootloader will load boot modules e.g. kernel, initramfs... in a temporary area before they are copied by Xen to each domain memory. To ensure sensitive data is not leaked from the modules, Xen must "scrub" them before handing the page over to the...

CVE-2021-34380

Bootloader contains a vulnerability in NVIDIA MB2 where potential heap overflow might cause corruption of the heap metadata, which might lead to arbitrary code execution, denial of service, and information disclosure during secure boot...

EulerOS Virtualization for ARM 64 3.0.6.0 : grub2 (EulerOS-SA-2021-2001)

According to the versions of the grub2 packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - A flaw was found in grub2 in versions prior to 2.06. Setparamprefix in the menu rendering code performs a length...

grub2: cutmem command allows privileged user to remove memory regions when Secure Boot is enabled

A flaw was found in grub2. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this...

grub2: Out-of-bounds write in grub_usb_device_initialize()

A flaw was found in grub2. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the...

grub2: Use-after-free in rmmod command

A flaw was found in grub2. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The...

grub2: acpi command allows privileged user to load crafted ACPI tables when Secure Boot is enabled

A flaw was found in GRUB 2, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table SSDT containing code to overwrite the Linux kernel lockdown variable content direct...

grub2: Stack buffer overflow in grub_parser_split_cmdline()

A flaw was found in grub2. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with...