CVE-2022-2078: Buffer Overflow

Published May 31, 2022
·
Updated

A vulnerability was found in the Linux kernel's nftsetdescconcatparse() function .This flaw allows an attacker to trigger a buffer overflow via nftsetdescconcatparse() , causing a denial of service and possibly to run code.

Other sources

An attacker can trigger a buffer overflow of the Linux kernel, via nftsetdescconcatparse(), in order to trigger a denial of service, and possibly to run code.

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/nftablesapi.c?id=fecf31ee395b0295f2d7260aa29946b7605f7c85

Red Hat

Affected Software

11 affected componentsFixes available
redhat/kernel-rt<0:4.18.0-425.3.1.rt7.213.el8
0:4.18.0-425.3.1.rt7.213.el8
redhat/kernel<0:4.18.0-425.3.1.el8
0:4.18.0-425.3.1.el8
redhat/kernel<0:5.14.0-70.26.1.el9_0
0:5.14.0-70.26.1.el9_0
redhat/kernel-rt<0:5.14.0-70.26.1.rt21.98.el9_0
0:5.14.0-70.26.1.rt21.98.el9_0
Linux Linux kernel<5.19
redhat Virtualization=4.0
redhat Enterprise Linux=8.0
redhat Enterprise Linux=9.0
Debian Debian Linux=11.0
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.22-16.12.25-1
redhat/kernel<5.19
5.19

Remediation

Information

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Mitigation

If not needed, disable the ability for unprivileged users to create namespaces: $ sudo sysctl -w kernel.unprivileged_userns_clone=0 $ echo kernel.unprivileged_userns_clone=0 | \ sudo tee /etc/sysctl.d/99-disable-unpriv-userns.conf

Event History

May 31, 2022
CVE Published
06:30 AM
Jun 13, 2022
Data Sourced
via Red Hat·08:02 AM
DescriptionSeverityAffected Software
Jun 30, 2022
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Jan 12, 2024
Data Sourced
via Launchpad·12:05 AM
Description
Apr 28, 2025
Data Sourced
via Ubuntu·04:36 AM
RemedyDescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2022-2078?

CVE-2022-2078 is classified as a high severity vulnerability due to its potential to cause a denial of service and execute arbitrary code.

2

How do I fix CVE-2022-2078?

To fix CVE-2022-2078, upgrade to the patched versions of the Linux kernel provided by Red Hat or Debian as specified in the vulnerability details.

3

Which Linux kernel versions are affected by CVE-2022-2078?

CVE-2022-2078 affects kernel versions up to 5.19 and specific versions of the Red Hat kernel and Debian Linux.

4

Can CVE-2022-2078 be exploited remotely?

Yes, CVE-2022-2078 can be exploited remotely through malformed packets processed by the kernel's network filtering capabilities.

5

What are the potential impacts of CVE-2022-2078 on my system?

The potential impacts of CVE-2022-2078 include system crashes, denial of service, and unauthorized code execution, compromising system integrity.

Contact

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