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CVE-2022-49975

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't redirect packets with invalid pkt_len Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any skbs…

Published Jun 18, 2025EPSS 0.26%

Overview

CVE-2022-49975 is a high-severity vulnerability. It was published on June 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

bpf: Don't redirect packets with invalid pkt_len

Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any

skbs, that is, the flow->head is null.

The root cause, as the [2] says, is because that bpf_prog_test_run_skb()

run a bpf prog which redirects empty skbs.

So we should determine whether the length of the packet modified by bpf

prog or others like bpf_prog_test is valid before forwarding it directly.

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/6204bf78b2a903b96ba43afff6abc0b04d6e0462Refgit.kernel.org/stable/c/72f2dc8993f10262092745a88cb2dd0fef094f23Refgit.kernel.org/stable/c/8b68e53d56697a59b5c53893b53f508bbdf272a0Refgit.kernel.org/stable/c/a75987714bd2d8e59840667a28e15c1fa5c47554Refgit.kernel.org/stable/c/fd1894224407c484f652ad456e1ce423e89bb3eb

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49975?

CVE-2022-49975 is a high-severity vulnerability. It was published on June 18, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2022-49975?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49975?

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-2022-49975?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49975 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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