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Ubuntu 18.04, 16.04 LTS: USN-6866-1 Critical Kernel Security Advisory

ubuntu
Calendar Grey July 3, 2024
Dist Ubuntu Esm H88
Ubuntu Security Patch: Critical kernel weaknesses addressed for sustained support (LTS) releases.
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-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-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

Details:

It was discovered that the ext4 file system implementation in the Linux

kernel did not properly validate data state on write operations. An

attacker could use this to construct a malicious ext4 file system image

that, when mounted, could cause a denial of service (system crash).

(CVE-2021-33631)

It was discovered that the ATA over Ethernet (AoE) driver in the Linux

kernel contained a race condition, leading to a use-after-free

v...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory Ubuntu race condition kernel integer overflow Denial of Service system crash

Update Instructions

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1132-oracle  4.15.0-1132.143
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1153-kvm     4.15.0-1153.158
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1163-gcp     4.15.0-1163.180
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1169-aws     4.15.0-1169.182
                                   Available with Ubuntu Pro
   linux-image-4.15.0-226-generic  4.15.0-226.238
                                   Available with Ubuntu Pro
   linux-image-4.15.0-226-lowlatency  4.15.0-226.238
                                   Available with Ubuntu Pro
   linux-image-aws-lts-18.04       4.15.0.1169.167
                                   Available with Ubuntu Pro
   linux-image-gcp-lts-18.04       4.15.0.1163.176
                                   Available with Ubuntu Pro
   linux-image-generic             4.15.0.226.210
                                   Available with Ubuntu Pro
   linux-image-kvm                 4.15.0.1153.144
                                   Available with Ubuntu Pro
   linux-image-lowlatency          4.15.0.226.210
                                   Available with Ubuntu Pro
   linux-image-oracle-lts-18.04    4.15.0.1132.137
                                   Available with Ubuntu Pro
   linux-image-virtual             4.15.0.226.210
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   linux-image-4.15.0-1132-oracle  4.15.0-1132.143~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1163-gcp     4.15.0-1163.180~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1169-aws     4.15.0-1169.182~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-226-generic  4.15.0-226.238~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-226-lowlatency  4.15.0-226.238~16.04.1
                                   Available with Ubuntu Pro
   linux-image-aws-hwe             4.15.0.1169.182~16.04.1
                                   Available with Ubuntu Pro
   linux-image-gcp                 4.15.0.1163.180~16.04.1
                                   Available with Ubuntu Pro
   linux-image-generic-hwe-16.04   4.15.0.226.238~16.04.1
                                   Available with Ubuntu Pro
   linux-image-gke                 4.15.0.1163.180~16.04.1
                                   Available with Ubuntu Pro
   linux-image-lowlatency-hwe-16.04  4.15.0.226.238~16.04.1
                                   Available with Ubuntu Pro
   linux-image-oem                 4.15.0.226.238~16.04.1
                                   Available with Ubuntu Pro
   linux-image-oracle              4.15.0.1132.143~16.04.1
                                   Available with Ubuntu Pro
   linux-image-virtual-hwe-16.04   4.15.0.226.238~16.04.1
                                   Available with Ubuntu Pro

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.

References

https://ubuntu.com/security/notices/USN-6866-1

CVE-2021-33631, CVE-2021-47063, CVE-2023-52615, CVE-2023-6270,

CVE-2024-2201, CVE-2024-23307, CVE-2024-24861, CVE-2024-26642,

CVE-2024-26720, CVE-2024-26736, CVE-2024-26898, CVE-2024-26922

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6866-1

Topics%20covered

Topics Covered

security advisory Ubuntu race condition kernel integer overflow Denial of Service system crash

Package Information

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