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Ubuntu 22.04 LTS: USN-6124-1 Critical: Linux Kernel OEM Issues

ubuntu
Calendar Grey May 30, 2023
Dist Ubuntu Esm H88
Multiple vulnerabilities identified in Ubuntu's Linux kernel pose risks to OEM configurations, necessitating urgent patches and system restarts.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-oem-5.17: Linux kernel for OEM systems

Details:

Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in

the netfilter subsystem of the Linux kernel when processing batch requests,

leading to 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-2023-32233)

Reima Ishii discovered that the nested KVM implementation for Intel x86

processors in the Linux kernel did not properly validate control registers

in certain situations. An attacker in a guest VM could use this to cause a

denial of service (guest crash). (CVE-2023-30456)

Gwnaun Jung discovered that the SFB packet scheduling 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 co...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu Linux kernel use-after-free OEM systems

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-5.17.0-1032-oem     5.17.0-1032.33
   linux-image-oem-22.04           5.17.0.1032.30
   linux-image-oem-22.04a          5.17.0.1032.30

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-6124-1

CVE-2022-3586, CVE-2022-4139, CVE-2023-1670, CVE-2023-2612,

CVE-2023-30456, CVE-2023-32233

Severity
critical
Lowest
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Critical

May 30, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu Linux kernel use-after-free OEM systems

Package Information

https://launchpad.net/ubuntu/+source/linux-oem-5.17/5.17.0-1032.33

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