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Ubuntu 18.04 LTS: USN-5925-1 Critical: Kernel Issues Affecting Stability

ubuntu
Calendar Grey March 6, 2023
Scroller Ubuntu
Multiple significant vulnerabilities addressed in Linux kernel impacting Ubuntu. Prompt updates are advised to maintain system integrity.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-kvm: Linux kernel for cloud environments

- linux-raspi2: Linux kernel for Raspberry Pi systems

- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors

Details:

It was discovered that the Upper Level Protocol (ULP) subsystem in the

Linux kernel did not properly handle sockets entering the LISTEN state in

certain protocols, 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-2023-0461)

It was discovered that a race condition existed in the Kernel Connection

Multiplexor (KCM) socket implementation in the Linux kernel when releasing

sockets in certain situations. A local attacker could use this to cause a

denial of service (system crash). (CVE-2022-3521)

It was discovered that the Netronome Ethernet driver in the Linux kernel

contained a use-after-free vuln...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel use-after-free Raspberry Pi cloud environments

Update Instructions

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1128-raspi2  4.15.0-1128.136
   linux-image-4.15.0-1136-kvm     4.15.0-1136.141
   linux-image-4.15.0-1146-snapdragon  4.15.0-1146.156
   linux-image-kvm                 4.15.0.1136.127
   linux-image-raspi2              4.15.0.1128.123
   linux-image-snapdragon          4.15.0.1146.145

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-5925-1

CVE-2022-3521, CVE-2022-3545, CVE-2022-3628, CVE-2022-3640,

CVE-2022-42328, CVE-2022-42329, CVE-2022-42895, CVE-2023-0461

Severity
critical
Lowest
Low
Medium
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Critical

March 06, 2023

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu kernel use-after-free Raspberry Pi cloud environments

Package Information

https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1136.141
https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1128.136
https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1146.156

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