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Ubuntu 22.04 ESM USN-5493-1 Critical: Linux Kernel Crash Risk

ubuntu
Calendar Grey June 26, 2022
Dist Ubuntu Esm H88
An urgent bug fix in Ubuntu necessitates immediate upgrades to avert potential system failures in specific scenarios. Find out more!
The system could be made to crash under certain conditions.

Summary

The system could be made to crash under certain conditions.

Software Description:

- linux: Linux kernel

- linux-hwe: 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 denial of service critical ubuntu linux kernel crash issue

Update Instructions

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

Ubuntu 21.10:
  linux-image-5.13.0-52-generic   5.13.0-52.59
  linux-image-5.13.0-52-generic-64k  5.13.0-52.59
  linux-image-5.13.0-52-generic-lpae  5.13.0-52.59
  linux-image-5.13.0-52-lowlatency  5.13.0-52.59
  linux-image-generic             5.13.0.52.58
  linux-image-generic-64k         5.13.0.52.58
  linux-image-generic-lpae        5.13.0.52.58
  linux-image-lowlatency          5.13.0.52.58
  linux-image-oem-20.04           5.13.0.52.58
  linux-image-virtual             5.13.0.52.58

Ubuntu 20.04 LTS:
  linux-image-5.4.0-121-generic   5.4.0-121.137
  linux-image-5.4.0-121-generic-lpae  5.4.0-121.137
  linux-image-5.4.0-121-lowlatency  5.4.0-121.137
  linux-image-generic             5.4.0.121.122
  linux-image-generic-lpae        5.4.0.121.122
  linux-image-lowlatency          5.4.0.121.122
  linux-image-oem                 5.4.0.121.122
  linux-image-oem-osp1            5.4.0.121.122
  linux-image-virtual             5.4.0.121.122

Ubuntu 18.04 LTS:
  linux-image-4.15.0-188-generic  4.15.0-188.199
  linux-image-4.15.0-188-generic-lpae  4.15.0-188.199
  linux-image-4.15.0-188-lowlatency  4.15.0-188.199
  linux-image-generic             4.15.0.188.173
  linux-image-generic-lpae        4.15.0.188.173
  linux-image-lowlatency          4.15.0.188.173
  linux-image-virtual             4.15.0.188.173

Ubuntu 16.04 ESM:
  linux-image-4.15.0-188-generic  4.15.0-188.199~16.04.1
  linux-image-4.15.0-188-lowlatency  4.15.0-188.199~16.04.1
  linux-image-generic-hwe-16.04   4.15.0.188.175
  linux-image-lowlatency-hwe-16.04  4.15.0.188.175
  linux-image-oem                 4.15.0.188.175
  linux-image-virtual-hwe-16.04   4.15.0.188.175

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-5493-1

CVE-2022-28388

Severity
critical
Lowest
Low
Medium
High
Critical

June 27, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical ubuntu linux kernel crash issue

Package Information

https://launchpad.net/ubuntu/+source/linux/5.13.0-52.59
https://launchpad.net/ubuntu/+source/linux/5.4.0-121.137
https://launchpad.net/ubuntu/+source/linux/4.15.0-188.199

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