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CVE-2026-23362

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix locking for bcm_op runtime updates Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates") added…

Published Mar 25, 2026CWE-667EPSS 0.10%

Overview

CVE-2026-23362 is a medium-severity vulnerability. It was published on March 25, 2026 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: bcm: fix locking for bcm_op runtime updates

Commit c2aba69d0c36 ("can: bcm: add locking for bcm_op runtime updates")

added a locking for some variables that can be modified at runtime when

updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup().

Usually the RX_SETUP only handles and filters incoming traffic with one

exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is

sent when a specific RTR frame is received. Therefore the rx bcm_op uses

bcm_can_tx() which uses the bcm_tx_lock that was only initialized in

bcm_tx_setup(). Add the missing spin_lock_init() when allocating the

bcm_op in bcm_rx_setup() to handle the RTR case properly.

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/0904037e713f787d1376e1d349c3bdf6c3105881Refgit.kernel.org/stable/c/70e951afad4c025261fe3c952d2b07237e320a01Refgit.kernel.org/stable/c/800f26f11ae37b17f58e0001f28a47dd75c26557Refgit.kernel.org/stable/c/8215ba7bc99e84e66fd6938874ec4330a9d96518Refgit.kernel.org/stable/c/8bcf2d847adb82b2c617456f6da17ac5e6c75285Refgit.kernel.org/stable/c/c35636e91e392e1540949bbc67932167cb48bc3aRefgit.kernel.org/stable/c/c85b96eaf766d8f066b1139a17a51efa2f6627efRefgit.kernel.org/stable/c/f0c349b2c21b220af5ba19f29b885e222958d796

How CyberStrike helps

Frequently asked questions

What is CVE-2026-23362?

CVE-2026-23362 is a medium-severity vulnerability. It was published on March 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-23362?

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-2026-23362?

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-2026-23362?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-23362 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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