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CVE-2023-54255

In the Linux kernel, the following vulnerability has been resolved: sh: dma: Fix DMA channel offset calculation Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a diff…

Published Dec 30, 2025EPSS 0.21%

Overview

CVE-2023-54255 is a known-severity vulnerability. It was published on December 30, 2025.

Technical description

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

sh: dma: Fix DMA channel offset calculation

Various SoCs of the SH3, SH4 and SH4A family, which use this driver,

feature a differing number of DMA channels, which can be distributed

between up to two DMAC modules. The existing implementation fails to

correctly accommodate for all those variations, resulting in wrong

channel offset calculations and leading to kernel panics.

Rewrite dma_base_addr() in order to properly calculate channel offsets

in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that

the correct DMAC module base is selected for the DMAOR register.

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/196f6c71905aa384c0177acf194a1144d480333bRefgit.kernel.org/stable/c/479380acfa63247b5ac62476138f847aefc62692Refgit.kernel.org/stable/c/4989627157735c1f1619f08e5bc1592418e7c878Refgit.kernel.org/stable/c/8fb11fa4805699c6b73a9c8a9d45807f9874abe3Refgit.kernel.org/stable/c/bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8adRefgit.kernel.org/stable/c/d1c946552af299f4fa85bf7da15e328123771128Refgit.kernel.org/stable/c/e82e47584847129a20b8c9f4a1dcde09374fb0e0Refgit.kernel.org/stable/c/e9e33faea104381bac80ac79328f0540fc2969f2

How CyberStrike helps

Frequently asked questions

What is CVE-2023-54255?

CVE-2023-54255 is a known-severity vulnerability. It was published on December 30, 2025.

How severe is CVE-2023-54255?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2023-54255?

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-2023-54255?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-54255 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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