Alerts This Week
Warning Icon 1 758
Alerts This Week
Warning Icon 1 758

Ubuntu 22.04 LTS USN-6444-2 Critical: Linux Kernel Denial of Service

ubuntu
Calendar Grey October 24, 2023
Dist Ubuntu Esm H88
Several security issues addressed in Ubuntu 22.04 LTS for the Linux kernel impacting StarFive chips posing critical threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-starfive-6.2: Linux kernel for StarFive processors

Details:

Ross Lagerwall discovered that the Xen netback backend driver in the Linux

kernel did not properly handle certain unusual packets from a

paravirtualized network frontend, leading to a buffer overflow. An attacker

in a guest VM could use this to cause a denial of service (host system

crash) or possibly execute arbitrary code. (CVE-2023-34319)

Bien Pham discovered that the netfiler subsystem in the Linux kernel

contained a race condition, leading to a use-after-free vulnerability. A

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

possibly execute arbitrary code. (CVE-2023-4244)

Kyle Zeng discovered that the networking stack implementation in the Linux

kernel did not properly validate skb object size in certain conditions. An

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

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu linux kernel out-of-bounds StarFive

Update Instructions

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

Ubuntu 22.04 LTS:
   linux-image-6.2.0-1007-starfive  6.2.0-1007.8~22.04.1
   linux-image-starfive            6.2.0.1007.8~22.04.1

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-6444-2

https://ubuntu.com/security/notices/USN-6444-1

CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753,

CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623,

CVE-2023-4881, CVE-2023-4921, CVE-2023-5197

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6444-2

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow Ubuntu linux kernel out-of-bounds StarFive

Package Information

https://launchpad.net/ubuntu/+source/linux-starfive-6.2/6.2.0-1007.8~22.04.1

Get the latest News and Insights

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

Your message here