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

×
Alerts This Week
Warning Icon 1 538
Alerts This Week
Warning Icon 1 538

Ubuntu 20.04 LTS: USN-5493-2 Critical System Crash Due To Kernel Issue

ubuntu
Calendar Grey July 1, 2022
Dist Ubuntu Esm H88
Crucial patch rolled out for Ubuntu to fix a critical bug in the linux-hwe-5.13 kernel. Enhance your security by upgrading now!
The system could be made to crash under certain conditions.

Summary

The system could be made to crash under certain conditions.

Software Description:

- linux-hwe-5.13: Linux hardware enablement (HWE) kernel

Details:

It was discovered that the 8 Devices USB2CAN interface implementation in

the Linux kernel did not properly handle certain error conditions, leading

to a double-free. A local attacker could possibly use this to cause a

denial of service (system crash).

Topics%20covered

Topics Covered

security advisory critical ubuntu system crash linux kernel

Update Instructions

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

Ubuntu 20.04 LTS:
  linux-image-5.13.0-52-generic   5.13.0-52.59~20.04.1
  linux-image-5.13.0-52-generic-64k  5.13.0-52.59~20.04.1
  linux-image-5.13.0-52-generic-lpae  5.13.0-52.59~20.04.1
  linux-image-5.13.0-52-lowlatency  5.13.0-52.59~20.04.1
  linux-image-generic-64k-hwe-20.04  5.13.0.52.59~20.04.31
  linux-image-generic-hwe-20.04   5.13.0.52.59~20.04.31
  linux-image-generic-lpae-hwe-20.04  5.13.0.52.59~20.04.31
  linux-image-lowlatency-hwe-20.04  5.13.0.52.59~20.04.31
  linux-image-virtual-hwe-20.04   5.13.0.52.59~20.04.31

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-5493-2

https://ubuntu.com/security/notices/USN-5493-1

CVE-2022-28388

Severity
critical
Lowest
Low
Medium
High
Critical

July 01, 2022

Topics%20covered

Topics Covered

security advisory critical ubuntu system crash linux kernel

Package Information

https://launchpad.net/ubuntu/+source/linux-hwe-5.13/5.13.0-52.59~20.04.1

Get the latest News and Insights

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