Ubuntu 22.04 LTS USN-5518-1 Critical: Kernel Exploits and Denial of Service

ubuntu

July 13, 2022

Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux: Linux kernel

- linux-aws: Linux kernel for Amazon Web Services (AWS) systems

- linux-azure: Linux kernel for Microsoft Azure Cloud systems

- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems

- linux-gke: Linux kernel for Google Container Engine (GKE) systems

- linux-ibm: Linux kernel for IBM cloud systems

- linux-kvm: Linux kernel for cloud environments

- linux-lowlatency: Linux low latency kernel

- linux-oracle: Linux kernel for Oracle Cloud systems

Details:

It was discovered that the eBPF implementation in the Linux kernel did not

properly prevent writes to kernel objects in BPF_BTF_LOAD commands. A

privileged local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2022-0500)

It was discovered that the Marvell NFC device driver implementation in the

Linux kernel did not properly perform memory cleanup operations in some

...

Read the Full Advisory

Topics Covered

security advisory denial of service critical local exploit kernel ubuntu

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS:
  linux-image-5.15.0-1010-ibm     5.15.0-1010.12
  linux-image-5.15.0-1011-gke     5.15.0-1011.14
  linux-image-5.15.0-1013-gcp     5.15.0-1013.18
  linux-image-5.15.0-1013-kvm     5.15.0-1013.16
  linux-image-5.15.0-1013-oracle  5.15.0-1013.17
  linux-image-5.15.0-1014-azure   5.15.0-1014.17
  linux-image-5.15.0-1015-aws     5.15.0-1015.19
  linux-image-5.15.0-41-generic   5.15.0-41.44
  linux-image-5.15.0-41-generic-64k  5.15.0-41.44
  linux-image-5.15.0-41-generic-lpae  5.15.0-41.44
  linux-image-5.15.0-41-lowlatency  5.15.0-41.44
  linux-image-5.15.0-41-lowlatency-64k  5.15.0-41.44
  linux-image-aws                 5.15.0.1015.15
  linux-image-azure               5.15.0.1014.13
  linux-image-gcp                 5.15.0.1013.11  linux-image-generic             5.15.0.41.43
  linux-image-generic-64k         5.15.0.41.43
  linux-image-generic-64k-hwe-22.04  5.15.0.41.43
  linux-image-generic-hwe-22.04   5.15.0.41.43
  linux-image-generic-lpae        5.15.0.41.43
  linux-image-generic-lpae-hwe-22.04  5.15.0.41.43
  linux-image-gke                 5.15.0.1011.14
  linux-image-gke-5.15            5.15.0.1011.14
  linux-image-ibm                 5.15.0.1010.9
  linux-image-kvm                 5.15.0.1013.11  linux-image-lowlatency          5.15.0.41.40
  linux-image-lowlatency-64k      5.15.0.41.40
  linux-image-lowlatency-64k-hwe-22.04  5.15.0.41.40
  linux-image-lowlatency-hwe-22.04  5.15.0.41.40
  linux-image-oem-20.04           5.15.0.41.43
  linux-image-oracle              5.15.0.1013.11  linux-image-virtual             5.15.0.41.43
  linux-image-virtual-hwe-22.04   5.15.0.41.43

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.