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Ubuntu 22.04 LTS USN-6231-1 Critical: Kernel Denial of Service Issues

ubuntu
Calendar Grey July 14, 2023
Dist Ubuntu Esm H88
Ubuntu addressed various vulnerabilities in the Linux kernel, responding to critical security concerns that require immediate patching.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-6.1: Linux kernel for OEM systems

Details:

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

kernel did not properly perform metadata validation when mounting certain

images. An attacker could use this to specially craft a file system image

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

(CVE-2023-2124)

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

not properly initialize memory in some situations, leading to an out-of-bounds write vulnerability. An attacker could use this to cause a denial of

service (system crash) or possibly execute arbitrary code. (CVE-2023-3090)

It was discovered that the DVB Core driver in the Linux kernel did not

properly handle locking events in certain situations. A local attacker

could use this to cause a denial of service (kernel deadlock).

(CVE-2023-31084)

It was disc...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1016-oem      6.1.0-1016.16
   linux-image-oem-22.04c          6.1.0.1016.16

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-6231-1

CVE-2023-2124, CVE-2023-3090, CVE-2023-31084, CVE-2023-3141,

CVE-2023-3212

Severity
critical
Lowest
Low
Medium
High
Critical

July 14, 2023

Topics%20covered

Topics Covered

security advisory denial of service system update ubuntu linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1016.16

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