SUSE SLED15 / SLES15 Security Update : shim (SUSE-SU-2020:2629-1)

This update for shim fixes the following issues : This update addresses the 'BootHole' security issue master CVE CVE-2020-10713, by disallowing binaries signed by the previous SUSE UEFI signing key from booting. This update should only be installed after updates of grub2, the Linux kernel and if...

USN-4440-1: linux kernel vulnerabilities

It was discovered that the network block device nbd implementation in the Linux kernel did not properly check for error conditions in some situations. An attacker could possibly use this to cause a denial of service system crash. CVE-2019-16089 It was discovered that the kernel-user space relay...

kernel: lockdown: bypass through ACPI write via efivar_ssdt

A flaw was found in how the ACPI table loading through the EFI variable and the related efivarssdt boot option was handled when the Linux kernel was locked down. This flaw allows a root privileged local user to circumvent the kernel lockdown restrictions. The highest threat from this vulnerabilit...

USN-4426-1: Linux kernel vulnerabilities

Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI variable. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. CVE-2019-20908 Fan Yang...

USN-4426-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities

Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI variable. A privileged attacker could use this to bypass Secure Boot lockdown restrictions and execute arbitrary code in the kernel. CVE-2019-20908 Fan Yang...

Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-4426-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4426-1 advisory. Jason A. Donenfeld discovered that the ACPI implementation in the Linux kernel did not properly restrict loading SSDT code from an EFI...