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Ubuntu 20.04 LTS USN-6134-1 Critical Denial Of Service Kernel Threat

ubuntu
Calendar Grey June 1, 2023
Dist Ubuntu Esm H88
Multiple vulnerabilities addressed in Ubuntu 20.04 LTS Linux kernel impacting Intel IoT devices. Update advised.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-intel-iotg-5.15: Linux kernel for Intel IoT platforms

Details:

It was discovered that the Traffic-Control Index (TCINDEX) implementation

in the Linux kernel did not properly perform filter deactivation in some

situations. A local attacker could possibly use this to gain elevated

privileges. Please note that with the fix for this CVE, kernel support for

the TCINDEX classifier has been removed. (CVE-2023-1829)

It was discovered that the Traffic-Control Index (TCINDEX) implementation

in the Linux kernel contained a use-after-free vulnerability. A local

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

possibly execute arbitrary code. (CVE-2023-1281)

It was discovered that the OverlayFS implementation in the Linux kernel did

not properly handle copy up operation in some conditions. A local attacker

could possibly use this to gain elevated privileges. (CVE...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel security ubuntu linux kernel urgent patch

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1030-intel-iotg  5.15.0-1030.35~20.04.1
   linux-image-intel               5.15.0.1030.35~20.04.22
   linux-image-intel-iotg          5.15.0.1030.35~20.04.22

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-6134-1

CVE-2022-27672, CVE-2022-3707, CVE-2022-4129, CVE-2022-47929,

CVE-2022-4842, CVE-2023-0386, 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-2023-1281, CVE-2023-1513,

CVE-2023-1652, CVE-2023-1829, CVE-2023-1872, CVE-2023-20938,

CVE-2023-21102, CVE-2023-2162, CVE-2023-26545, CVE-2023-32269

Severity
critical
Lowest
Low
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Critical

June 01, 2023

Topics%20covered

Topics Covered

security advisory denial of service kernel security ubuntu linux kernel urgent patch

Package Information

https://launchpad.net/ubuntu/+source/linux-intel-iotg-5.15/5.15.0-1030.35~20.04.1

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