Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2025-38004

7.3 · HIGH

In the Linux kernel, the following vulnerability has been resolved: can: bcm: add locking for bcm_op runtime updates The CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via hrti…

Published Jun 8, 2025CWE-125EPSS 0.26%

Overview

CVE-2025-38004 is a high-severity vulnerability. It was published on June 8, 2025 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, 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: bcm: add locking for bcm_op runtime updates

The CAN broadcast manager (CAN BCM) can send a sequence of CAN frames via

hrtimer. The content and also the length of the sequence can be changed

resp reduced at runtime where the 'currframe' counter is then set to zero.

Although this appeared to be a safe operation the updates of 'currframe'

can be triggered from user space and hrtimer context in bcm_can_tx().

Anderson Nascimento created a proof of concept that triggered a KASAN

slab-out-of-bounds read access which can be prevented with a spin_lock_bh.

At the rework of bcm_can_tx() the 'count' variable has been moved into

the protected section as this variable can be modified from both contexts

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/2a437b86ac5a9893c902f30ef66815bf13587bf6Refgit.kernel.org/stable/c/7595de7bc56e0e52b74e56c90f7e247bf626d628Refgit.kernel.org/stable/c/76c84c3728178b2d38d5604e399dfe8b0752645eRefgit.kernel.org/stable/c/8f1c022541bf5a923c8d6fa483112c15250f30a4Refgit.kernel.org/stable/c/c2aba69d0c36a496ab4f2e81e9c2b271f2693fd7Refgit.kernel.org/stable/c/c4e8a172501e677ebd8ea9d9161d97dc4df56fbdRefgit.kernel.org/stable/c/cc55dd28c20a6611e30596019b3b2f636819a4c0Refgit.kernel.org/stable/c/fbd8fdc2b218e979cfe422b139b8f74c12419d1fReflists.debian.org/debian-lts-announce/2025/10/msg00007.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38004?

CVE-2025-38004 is a high-severity vulnerability. It was published on June 8, 2025 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2025-38004?

This vulnerability has a CVSS 3.1 base score of 7.3, 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-2025-38004?

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-2025-38004?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38004 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.

Related HIGH CVEs from 2025

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999