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Ubuntu 22.04: USN-6173-1 Critical: Linux Kernel Denial Of Service

ubuntu
Calendar Grey June 16, 2023
Dist Ubuntu Esm H88
Patch addressing severe security flaws in Ubuntu's linux-oem-6.1 kernel affecting overall system reliability and confidentiality.
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:

Gwangun Jung discovered that the Quick Fair Queueing scheduler

implementation in the Linux kernel contained an out-of-bounds write

vulnerability. A local attacker could use this to cause a denial of service

(system crash) or possibly execute arbitrary code. (CVE-2023-31436)

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux

kernel did not properly perform data buffer size validation in some

situations. A physically proximate attacker could use this to craft a

malicious USB device that when inserted, could cause a denial of service

(system crash) or possibly expose sensitive information. (CVE-2023-1380)

Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did

not properly perform permissions checks when handling HCI sockets. A

physically proximate attacker could use this to cause a denial...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue Ubuntu kernel update instructions system crash

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.1.0-1014-oem      6.1.0-1014.14
   linux-image-oem-22.04c          6.1.0.1014.14

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-6173-1

CVE-2023-1380, CVE-2023-2002, CVE-2023-2156, CVE-2023-2269,

CVE-2023-31436, CVE-2023-32250, CVE-2023-32254

Severity
critical
Lowest
Low
Medium
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Critical

June 16, 2023

Topics%20covered

Topics Covered

security advisory denial of service security issue Ubuntu kernel update instructions system crash

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-6.1/6.1.0-1014.14

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