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CVE-2022-49659

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits In commit 1be37d3b0414 ("can: m_can: fix periph…

Published Feb 26, 2025EPSS 0.26%

Overview

CVE-2022-49659 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits

In commit 1be37d3b0414 ("can: m_can: fix periph RX path: use

rx-offload to ensure skbs are sent from softirq context") the RX path

for peripheral devices was switched to RX-offload.

Received CAN frames are pushed to RX-offload together with a

timestamp. RX-offload is designed to handle overflows of the timestamp

correctly, if 32 bit timestamps are provided.

The timestamps of m_can core are only 16 bits wide. So this patch

shifts them to full 32 bit before passing them to RX-offload.

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/2a2914a5bd7f38efe55a8372178146de82e0bce9Refgit.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21Refgit.kernel.org/stable/c/c7333f79888497bfd75dcd02a94eaf836dd1042c

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49659?

CVE-2022-49659 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49659?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-49659?

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-2022-49659?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49659 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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