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

×
Alerts This Week
Warning Icon 1 573
Alerts This Week
Warning Icon 1 573

Ubuntu 20.04 LTS USN-6681-2 Critical: Kernel Denial of Service Issues

ubuntu
Calendar Grey March 11, 2024
Dist Ubuntu Esm H88
A number of security vulnerabilities in the Linux kernel have been patched for Ubuntu 20.04 and 18.04, prompting immediate updates for users at risk.
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

- linux-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors

- linux-raspi-5.4: Linux kernel for Raspberry Pi systems

Details:

Wenqing Liu discovered that the f2fs file system implementation in the

Linux kernel did not properly validate inode types while performing garbage

collection. An attacker could use this to construct a malicious f2fs image

that, when mounted and operated on, could cause a denial of service (system

crash). (CVE-2021-44879)

It was discovered that the DesignWare USB3 for Qualcomm SoCs driver in the

Linux kernel did not properly handle certain error conditions during device

registration. A local attacker could possibly use this to cause a denial of

service (system crash). (CVE-2023-22995)

Bien Pham discovered that the netfiler subsystem in the Linux kernel

contained a race condition, leading t...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update instructions ubuntu security issues use-after-free

Update Instructions

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1039-xilinx-zynqmp  5.4.0-1039.43
   linux-image-5.4.0-1080-bluefield  5.4.0-1080.87
   linux-image-bluefield           5.4.0.1080.76
   linux-image-xilinx-zynqmp       5.4.0.1039.39

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1104-raspi    5.4.0-1104.116~18.04.1
   linux-image-raspi-hwe-18.04     5.4.0.1104.101

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-6681-2

https://ubuntu.com/security/notices/USN-6681-1

CVE-2021-44879, CVE-2023-22995, CVE-2023-4244, CVE-2023-51779,

CVE-2023-51780, CVE-2023-51782, CVE-2023-6121, CVE-2024-0340

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6681-2

Topics%20covered

Topics Covered

security advisory denial of service kernel update instructions ubuntu security issues use-after-free

Package Information

https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1080.87
https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1039.43

Get the latest News and Insights

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