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Ubuntu 22.10 & 22.04 LTS: USN-6096-1 Critical Kernel Fixes Report

ubuntu
Calendar Grey May 22, 2023
Dist Ubuntu Esm H88
Debian Security Update DSU-4051-1 addresses critical flaws in the Linux operating system that require immediate action.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

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

- linux-hwe-5.19: Linux hardware enablement (HWE) kernel

Details:

It was discovered that some AMD x86-64 processors with SMT enabled could

speculatively execute instructions using a return address from a sibling

thread. A local attacker could possibly use this to expose sensitive

information. (CVE-2022-27672)

Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux

kernel contained an out-of-bounds write vulnerability. A local attacker

could use this to cause a denial of service (system crash).

(CVE-2022-36280)

Zheng Wang discovered that the Intel i915 graphics driver in the Linux

kernel did not properly handle certain error conditions, leading to a

double-free. A local attacker could possibly use this to cause a denial of

service (system crash). (CVE-2022-3707)

Haowei Yan discovered that a r...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical local attack information exposure ubuntu linux kernel

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1024-gcp     5.19.0-1024.26
   linux-image-gcp                 5.19.0.1024.20

Ubuntu 22.04 LTS:
   linux-image-5.19.0-42-generic   5.19.0-42.43~22.04.1
   linux-image-5.19.0-42-generic-64k  5.19.0-42.43~22.04.1
   linux-image-5.19.0-42-generic-lpae  5.19.0-42.43~22.04.1
   linux-image-generic-64k-hwe-22.04  5.19.0.42.43~22.04.15
   linux-image-generic-hwe-22.04   5.19.0.42.43~22.04.15
   linux-image-generic-lpae-hwe-22.04  5.19.0.42.43~22.04.15
   linux-image-virtual-hwe-22.04   5.19.0.42.43~22.04.15

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-6096-1

CVE-2022-27672, CVE-2022-36280, CVE-2022-3707, CVE-2022-4129,

CVE-2022-4842, CVE-2022-48423, CVE-2022-48424, CVE-2023-0210,

CVE-2023-0394, CVE-2023-0458, CVE-2023-0459, CVE-2023-1073,

CVE-2023-1074, CVE-2023-1075, CVE-2023-1078, CVE-2023-1118,

CVE-2023-1513, CVE-2023-1652, CVE-2023-21102, CVE-2023-21106,

CVE-2023-2162, CVE-2023-23454, CVE-2023-23455, CVE-2023-26544,

CVE-2023-32269

Severity
critical
Lowest
Low
Medium
High
Critical

May 22, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical local attack information exposure ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-gcp/5.19.0-1024.26
https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-42.43~22.04.1

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