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CVE-2022-49110

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: revisit gc autotuning as of commit 4608fdfc07e1 ("netfilter: conntrack: collect all entries in one cycle"…

Published Feb 26, 2025EPSS 0.61%

Overview

CVE-2022-49110 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack: revisit gc autotuning

as of commit 4608fdfc07e1

("netfilter: conntrack: collect all entries in one cycle")

conntrack gc was changed to run every 2 minutes.

On systems where conntrack hash table is set to large value, most evictions

happen from gc worker rather than the packet path due to hash table

distribution.

This causes netlink event overflows when events are collected.

This change collects average expiry of scanned entries and

reschedules to the average remaining value, within 1 to 60 second interval.

To avoid event overflows, reschedule after each bucket and add a

limit for both run time and number of evictions per run.

If more entries have to be evicted, reschedule and restart 1 jiffy

into the future.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2cfadb761d3d0219412fd8150faea60c7e863833Refgit.kernel.org/stable/c/58d52743ae85d28c9335c6034d6ce350b8689951Refgit.kernel.org/stable/c/592e57591826f3d09c28d755a39ea8e9d13705adRefgit.kernel.org/stable/c/7cd361d5e6d986c0d4cafb9ceaa803359048ae15

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49110?

CVE-2022-49110 is a high-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2022-49110?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-49110?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-49110?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49110 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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