Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×

Alerts This Week
Warning Icon 1 524
Alerts This Week
Warning Icon 1 524

Ubuntu 22.10 USN-5950-1 Critical Denial Of Service Threats

ubuntu
Calendar Grey March 14, 2023
Scroller Ubuntu
The Ubuntu Security Announcement USN-5951-1 highlights significant vulnerabilities in the QEMU package, detailing various exploits and recommended upgrade procedures.
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

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)

Davide Ornaghi discovered that the netfilter subsystem in the Linux kernel

did not properly handle VLAN headers in some situations. A local attacker

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

execute arbitrary code. (CVE-2023-0179)

It was discovered that the NVMe driver in the Linux kernel did not properly

handle reset events in some situations. A local attacker could use this to

cause a denial of service (system crash). (CVE-2022-3169)

Maxim Levitsky discovered t...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel issue

Update Instructions

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

Ubuntu 22.10:
   linux-image-5.19.0-1019-kvm     5.19.0-1019.20
   linux-image-kvm                 5.19.0.1019.16

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-5950-1

CVE-2022-3169, CVE-2022-3344, CVE-2022-3435, CVE-2022-3521,

CVE-2022-3545, CVE-2022-4139, CVE-2022-4379, CVE-2022-45869,

CVE-2022-47518, CVE-2022-47519, CVE-2022-47520, CVE-2022-47521,

CVE-2023-0179, CVE-2023-0461, CVE-2023-26605

Severity
critical
Lowest
Low
Medium
High
Critical

March 14, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu kernel issue

Package Information

https://launchpad.net/ubuntu/+source/linux-kvm/5.19.0-1019.20

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.