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Ubuntu 22.04 LTS USN-6260-1 Critical: Kernel Denial Of Service Risks

ubuntu
Calendar Grey July 27, 2023
Dist Ubuntu Esm H88
Numerous weaknesses discovered in the Linux kernel for Ubuntu; please upgrade rapidly to maintain system integrity and safeguarding.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-aws-5.19: Linux kernel for Amazon Web Services (AWS) systems

- linux-gcp-5.19: Linux kernel for Google Cloud Platform (GCP) systems

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

Details:

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

kernel did not properly check buffer indexes in certain situations, leading

to an out-of-bounds read vulnerability. A local attacker could possibly use

this to expose sensitive information (kernel memory). (CVE-2022-48502)

Stonejiajia, Shir Tamari and Sagi Tzadik discovered that the OverlayFS

implementation in the Ubuntu Linux kernel did not properly perform

permission checks in certain situations. A local attacker could possibly

use this to gain elevated privileges. (CVE-2023-2640)

It was discovered that the IP-VLAN network driver for the Linux kernel did

not properly initialize memory in some situations, ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical ubuntu linux kernel permission checks

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.19.0-1029-aws     5.19.0-1029.30~22.04.1
   linux-image-5.19.0-1030-gcp     5.19.0-1030.32~22.04.1
   linux-image-5.19.0-50-generic   5.19.0-50.50
   linux-image-5.19.0-50-generic-64k  5.19.0-50.50
   linux-image-5.19.0-50-generic-lpae  5.19.0-50.50
   linux-image-aws                 5.19.0.1029.30~22.04.13
   linux-image-gcp                 5.19.0.1030.32~22.04.2
   linux-image-generic-64k-hwe-22.04  5.19.0.50.22
   linux-image-generic-hwe-22.04   5.19.0.50.22
   linux-image-generic-lpae-hwe-22.04  5.19.0.50.22
   linux-image-virtual-hwe-22.04   5.19.0.50.22

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-6260-1

CVE-2022-48502, CVE-2023-2640, CVE-2023-3090, CVE-2023-31248,

CVE-2023-3141, CVE-2023-32629, CVE-2023-3389, CVE-2023-3390,

CVE-2023-35001

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6260-1

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical ubuntu linux kernel permission checks

Package Information

https://launchpad.net/ubuntu/+source/linux-aws-5.19/5.19.0-1029.30~22.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-5.19/5.19.0-1030.32~22.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-50.50

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