Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 603
Alerts This Week
Warning Icon 1 603

Ubuntu 20.04 LTS USN-6093-1 Critical: Linux Kernel Access Issues

ubuntu
Calendar Grey May 22, 2023
Dist Ubuntu Esm H88
Ubuntu 20.04 LTS's linux-bluefield kernel fixes various security issues, targeting denial of service and local access threats.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-bluefield: Linux kernel for NVIDIA BlueField platforms

Details:

It was discovered that the Traffic-Control Index (TCINDEX) implementation

in the Linux kernel did not properly perform filter deactivation in some

situations. A local attacker could possibly use this to gain elevated

privileges. Please note that with the fix for this CVE, kernel support for

the TCINDEX classifier has been removed. (CVE-2023-1829)

It was discovered that the Traffic-Control Index (TCINDEX) 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 code. (CVE-2023-1281)

Jiasheng Jiang discovered that the HSA Linux kernel driver for AMD Radeon

GPU devices did not properly validate memory allocation in certain

situations, leading to a null pointer dereference vulnerability. A...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service local access ubuntu kernel threats linux-bluefield

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1062-bluefield  5.4.0-1062.68
   linux-image-bluefield           5.4.0.1062.57

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-6093-1

CVE-2022-3108, CVE-2022-3903, CVE-2022-4129, CVE-2023-0458,

CVE-2023-1073, CVE-2023-1074, CVE-2023-1281, CVE-2023-1829,

CVE-2023-26545

Severity
critical
Lowest
Low
Medium
High
Critical

May 22, 2023

Topics%20covered

Topics Covered

security advisory denial of service local access ubuntu kernel threats linux-bluefield

Package Information

https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1062.68

Get the latest News and Insights

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