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Ubuntu 22.04 LTS USN-6133-1 Critical: Kernel Denial Of Service Issues

ubuntu
Calendar Grey June 1, 2023
Dist Ubuntu Esm H88
Urgent security bulletin for Ubuntu 22.04 LTS outlining various kernel vulnerabilities and essential patches.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-intel-iotg: 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 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)

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...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation kernel ubuntu linux-intel-iotg

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1030-intel-iotg  5.15.0-1030.35
   linux-image-intel-iotg          5.15.0.1030.29

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-6133-1

CVE-2022-27672, CVE-2022-3707, CVE-2023-0459, CVE-2023-1075,

CVE-2023-1078, CVE-2023-1118, CVE-2023-1513, CVE-2023-1829,

CVE-2023-1872, CVE-2023-20938, CVE-2023-2162, CVE-2023-32269

Severity
critical
Lowest
Low
Medium
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Critical

June 01, 2023

Topics%20covered

Topics Covered

security advisory denial of service privilege escalation kernel ubuntu linux-intel-iotg

Package Information

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

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