Ubuntu 5790-1 High Severity: Kernel Flaws Impacting System Stability

ubuntu

January 6, 2023

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-4.15: Linux kernel for Microsoft Azure Cloud systems

- linux-dell300x: Linux kernel for Dell 300x platforms

- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems

- linux-kvm: Linux kernel for cloud environments

- linux-oracle: Linux kernel for Oracle Cloud systems

- linux-raspi2: Linux kernel for Raspberry Pi systems

- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors

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

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

- linux-hwe: Linux hardware enablement (HWE) kernel

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

Details:

It was discovered that the BPF verifier in the Linux kernel did not

properly handle internal data structures. A local attacker co...

Read the Full Advisory

Topics Covered

security advisory high severity Ubuntu memory leak kernel system stability local attacker

Update Instructions

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1058-dell300x  4.15.0-1058.63
   linux-image-4.15.0-1112-oracle  4.15.0-1112.123
   linux-image-4.15.0-1125-raspi2  4.15.0-1125.133
   linux-image-4.15.0-1133-kvm     4.15.0-1133.138
   linux-image-4.15.0-1142-gcp     4.15.0-1142.158
   linux-image-4.15.0-1143-snapdragon  4.15.0-1143.153
   linux-image-4.15.0-1147-aws     4.15.0-1147.159
   linux-image-4.15.0-1158-azure   4.15.0-1158.173
   linux-image-4.15.0-201-generic  4.15.0-201.212
   linux-image-4.15.0-201-generic-lpae  4.15.0-201.212
   linux-image-4.15.0-201-lowlatency  4.15.0-201.212
   linux-image-aws-lts-18.04       4.15.0.1147.145
   linux-image-azure-lts-18.04     4.15.0.1158.126
   linux-image-dell300x            4.15.0.1058.57
   linux-image-gcp-lts-18.04       4.15.0.1142.156
   linux-image-generic             4.15.0.201.184
   linux-image-generic-lpae        4.15.0.201.184
   linux-image-kvm                 4.15.0.1133.124
   linux-image-lowlatency          4.15.0.201.184
   linux-image-oracle-lts-18.04    4.15.0.1112.117
   linux-image-raspi2              4.15.0.1125.120
   linux-image-snapdragon          4.15.0.1143.142
   linux-image-virtual             4.15.0.201.184

Ubuntu 16.04 ESM:
   linux-image-4.15.0-1112-oracle  4.15.0-1112.123~16.04.1
   linux-image-4.15.0-1142-gcp     4.15.0-1142.158~16.04.1
   linux-image-4.15.0-1147-aws-hwe  4.15.0-1147.159~16.04.1
   linux-image-4.15.0-201-generic  4.15.0-201.212~16.04.1
   linux-image-4.15.0-201-lowlatency  4.15.0-201.212~16.04.1
   linux-image-aws-hwe             4.15.0.1147.132
   linux-image-gcp                 4.15.0.1142.134
   linux-image-generic-hwe-16.04   4.15.0.201.186
   linux-image-gke                 4.15.0.1142.134
   linux-image-lowlatency-hwe-16.04  4.15.0.201.186
   linux-image-oem                 4.15.0.201.186
   linux-image-oracle              4.15.0.1112.94
   linux-image-virtual-hwe-16.04   4.15.0.201.186

Ubuntu 14.04 ESM:
   linux-image-4.15.0-1158-azure   4.15.0-1158.173~14.04.1
   linux-image-azure               4.15.0.1158.125

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.