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Ubuntu 18.04 LTS USN-5862-1 Critical: linux-snapdragon Denial of Service

ubuntu
Calendar Grey February 9, 2023
Dist Ubuntu Esm H88
Critical security enhancement for Ubuntu resolving various kernel vulnerabilities affecting the Linux-snapdragon released on February 09, 2023.
Several security issues were fixed in the Linux kernel.

Summary

Several security issues were fixed in the Linux kernel.

Software Description:

- linux-snapdragon: Linux kernel for Qualcomm Snapdragon processors

Details:

It was discovered that an out-of-bounds write vulnerability existed in the

Video for Linux 2 (V4L2) implementation in the Linux kernel. A local

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

possibly execute arbitrary code. (CVE-2022-20369)

Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan

and Ariel Sabba discovered that some Intel processors with Enhanced

Indirect Branch Restricted Speculation (eIBRS) did not properly handle RET

instructions after a VM exits. A local attacker could potentially use this

to expose sensitive information. (CVE-2022-26373)

David Leadbeater discovered that the netfilter IRC protocol tracking

implementation in the Linux Kernel incorrectly handled certain message

payloads in some situations. A remote attacker could possibly use thi...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash local attacker linux-snapdragon

Update Instructions

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

Ubuntu 18.04 LTS:
   linux-image-4.15.0-1145-snapdragon  4.15.0-1145.155
   linux-image-snapdragon          4.15.0.1145.144

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-5862-1

CVE-2022-20369, CVE-2022-26373, CVE-2022-2663, CVE-2022-29900,

CVE-2022-29901, CVE-2022-3646, CVE-2022-3649, CVE-2022-39842,

CVE-2022-41849, CVE-2022-41850, CVE-2022-43750

Severity
critical
Lowest
Low
Medium
High
Critical

February 09, 2023

Topics%20covered

Topics Covered

security advisory denial of service kernel update ubuntu system crash local attacker linux-snapdragon

Package Information

https://launchpad.net/ubuntu/+source/linux-snapdragon/4.15.0-1145.155

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