CVE-2021-47134 efi/fdt: fix panic when no valid fdt found

In the Linux kernel, the following vulnerability has been resolved: efi/fdt: fix panic when no valid fdt found setuparch would invoke efiinit-efigetfdtparams. If no valid fdt found then initialbootparams will be null. So we should stop further fdt processing here. I encountered this issue on risc...

CVE-2021-47134

CVE-2021-47134 affects the Linux kernel boot path: if no valid FDT is found, setup_arch() calls efi_init()->efi_get_fdt_params() and initial_boot_params becomes NULL, causing a panic. The patch fixes this by stopping further FDT processing when no valid FDT is found (observed on riscv). Remedi...

CVE-2021-47134 efi/fdt: fix panic when no valid fdt found

In the Linux kernel, the following vulnerability has been resolved: efi/fdt: fix panic when no valid fdt found setuparch would invoke efiinit-efigetfdtparams. If no valid fdt found then initialbootparams will be null. So we should stop further fdt processing here. I encountered this issue on risc...

CVE-2021-47134

In the Linux kernel, the following vulnerability has been resolved: efi/fdt: fix panic when no valid fdt found setuparch would invoke efiinit-efigetfdtparams. If no valid fdt found then initialbootparams will be null. So we should stop further fdt processing here. I encountered this issue on risc...

EulerOS Virtualization 2.10.1 : grub2 (EulerOS-SA-2024-1358)

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : - An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker to present a specially...

USN-6688-1: Linux kernel (OEM) vulnerabilities

Pratyush Yadav discovered that the Xen network backend implementation in the Linux kernel did not properly handle zero length data request, leading to a null pointer dereference vulnerability. An attacker in a guest VM could possibly use this to cause a denial of service host domain crash...

The vulnerability of the `efivarfs_reconfigure()` function in the `fs/efivarfs/super.c` file of the EFI File System kernel of the Linux operating system allows a attacker to compromise the integrity and accessibility of protected information.

The vulnerability of the efivarfsreconfigure function in the fs/efivarfs/super.c file of the EFI Variable Filesystem kernel of the Linux operating system is related to the assignment of a null pointer. Exploiting this vulnerability could allow an attacker to compromise the integrity and...

edk2: Buffer overflow in the DHCPv6 client via a long Server ID option

A security flaw was identified in EDK2, the open-source reference implementation of the UEFI specification, involving a buffer overflow vulnerability. This particular weakness enables an unauthorized attacker within the vicinity of the network to transmit a specifically crafted DHCPv6 message...

edk2: Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message

A security weakness was identified in EDK2, the open-source reference implementation of the UEFI specification, revealing a buffer overflow vulnerability. This vulnerability enables an unauthorized attacker within proximity on the network to transmit a specifically crafted DHCPv6 Advertise messag...

Virtuozzo Hybrid Infrastructure 6.0 Update 1 Hotfix 3 (6.0.1-89)

This update provides stability improvements. Vulnerability id: VSTOR-82695 Deploying a Kubernetes cluster may take longer than expected. Vulnerability id: VSTOR-82730 Restarting libvirtd causes EFI VMs to reboot...

SUSE CVE-2021-46951

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

How To Hunt For UEFI Malware Using Velociraptor

UEFI threats have historically been limited in number and mostly implemented by nation state actors as stealthy persistence. However, the recent proliferation of Black Lotus on the dark web, Trickbot enumeration module late 2022, and Glupteba November 2023 indicates that this historical trend may...

DEBIAN-CVE-2021-46951

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

Integer overflow

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

CVE-2021-46951

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

UBUNTU-CVE-2021-46951

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

CVE-2021-46951 tpm: efi: Use local variable for calculating final log size

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

CVE-2021-46951 tpm: efi: Use local variable for calculating final log size

In the Linux kernel, the following vulnerability has been resolved: tpm: efi: Use local variable for calculating final log size When tpmreadlogefi is called multiple times, which happens when one loads and unloads a TPM2 driver multiple times, then the global variable efitpmfinallogsize will at...

CVE-2021-46951

CVE-2021-46951 (Linux kernel) concerns a local vulnerability in TPM support where tpm_read_log_efi could trigger integer underflow of efi_tpm_final_log_size when a TPM2 driver is loaded/unloaded repeatedly. The issue arises from subtracting final_events_preboot_size from a global final log size, ...

CVE-2021-46910

In the Linux kernel, the following vulnerability has been resolved: ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUGKMAPLOCAL is enabled The debugging code for kmaplocal doubles the number of per-CPU fixmap slots allocated for kmaplocal, in order to use half of them as guard regions. This...