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CVE-2022-49844

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: can: dev: fix skb drop check In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element…

Published May 1, 2025CWE-125EPSS 0.19%

Overview

CVE-2022-49844 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

can: dev: fix skb drop check

In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only

mode") the priv->ctrlmode element is read even on virtual CAN

interfaces that do not create the struct can_priv at startup. This

out-of-bounds read may lead to CAN frame drops for virtual CAN

interfaces like vcan and vxcan.

This patch mainly reverts the original commit and adds a new helper

for CAN interface drivers that provide the required information in

struct can_priv.

[mkl: patch pch_can, too]

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/386c49fe31ee748e053860b3bac7794a933ac9acRefgit.kernel.org/stable/c/ae64438be1923e3c1102d90fd41db7afcfaf54cc

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49844?

CVE-2022-49844 is a high-severity vulnerability. It was published on May 1, 2025 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2022-49844?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2022-49844?

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-2022-49844?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49844 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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