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Ubuntu 18.04 LTS USN-6252-1 Critical: Kernel Denials Of Service

ubuntu
Calendar Grey July 26, 2023
Dist Ubuntu Esm H88
Numerous vulnerabilities resolved in the Linux kernel for different Ubuntu LTS versions, safeguarding overall system security.
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-snapdragon: Linux kernel for Qualcomm Snapdragon processors

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

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

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

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

- linux-oracle: Linux kernel for Oracle Cloud systems

Details:

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

kernel contained a use-after-free vulnerability. An attacker could use this

to construct a malicious ext4 file ...

Read the Full Advisory

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Topics Covered

security advisory denial of service critical kernel ubuntu

Update Instructions

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1068-dell300x  4.15.0-1068.73
   linux-image-4.15.0-1143-kvm     4.15.0-1143.148
   linux-image-4.15.0-1153-gcp     4.15.0-1153.170
   linux-image-4.15.0-1153-snapdragon  4.15.0-1153.163
   linux-image-4.15.0-1159-aws     4.15.0-1159.172
   linux-image-4.15.0-1168-azure   4.15.0-1168.183
   linux-image-4.15.0-214-generic  4.15.0-214.225
   linux-image-4.15.0-214-generic-lpae  4.15.0-214.225
   linux-image-4.15.0-214-lowlatency  4.15.0-214.225
   linux-image-aws-lts-18.04       4.15.0.1159.157
   linux-image-azure-lts-18.04     4.15.0.1168.136
   linux-image-dell300x            4.15.0.1068.67
   linux-image-gcp-lts-18.04       4.15.0.1153.167
   linux-image-generic             4.15.0.214.197
   linux-image-generic-lpae        4.15.0.214.197
   linux-image-kvm                 4.15.0.1143.134
   linux-image-lowlatency          4.15.0.214.197
   linux-image-snapdragon          4.15.0.1153.152
   linux-image-virtual             4.15.0.214.197

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1122-oracle  4.15.0-1122.133~16.04.1
   linux-image-4.15.0-1153-gcp     4.15.0-1153.170~16.04.1
   linux-image-4.15.0-1159-aws     4.15.0-1159.172~16.04.1
   linux-image-4.15.0-1168-azure   4.15.0-1168.183~16.04.1
   linux-image-4.15.0-214-generic  4.15.0-214.225~16.04.1
   linux-image-4.15.0-214-lowlatency  4.15.0-214.225~16.04.1
   linux-image-aws-hwe             4.15.0.1159.142
   linux-image-azure               4.15.0.1168.152
   linux-image-gcp                 4.15.0.1153.143
   linux-image-generic-hwe-16.04   4.15.0.214.199
   linux-image-gke                 4.15.0.1153.143
   linux-image-lowlatency-hwe-16.04  4.15.0.214.199
   linux-image-oem                 4.15.0.214.199
   linux-image-oracle              4.15.0.1122.103
   linux-image-virtual-hwe-16.04   4.15.0.214.199

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
   linux-image-4.15.0-1168-azure   4.15.0-1168.183~14.04.1
   linux-image-azure               4.15.0.1168.134

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-6252-1

CVE-2022-1184, CVE-2022-3303, CVE-2023-1611, CVE-2023-1670,

CVE-2023-1859, CVE-2023-1990, CVE-2023-2124, CVE-2023-3090,

CVE-2023-3111, CVE-2023-3141, CVE-2023-3268, CVE-2023-3390,

CVE-2023-35001

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6252-1

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Topics Covered

security advisory denial of service critical kernel ubuntu

Package Information

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