CVE-2026-23037

Published Jan 31, 2026

Overview

CVE-2026-23037 is a known-severity vulnerability. It was published on January 31, 2026.

Technical Description

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

can: etas_es58x: allow partial RX URB allocation to succeed

When es58x_alloc_rx_urbs() fails to allocate the requested number of

URBs but succeeds in allocating some, it returns an error code.

This causes es58x_open() to return early, skipping the cleanup label

'free_urbs', which leads to the anchored URBs being leaked.

As pointed out by maintainer Vincent Mailhol, the driver is designed

to handle partial URB allocation gracefully. Therefore, partial

allocation should not be treated as a fatal error.

Modify es58x_alloc_rx_urbs() to return 0 if at least one URB has been

allocated, restoring the intended behavior and preventing the leak

in es58x_open().

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

Ref git.kernel.org/stable/c/611e839d2d552416b498ed5593e10670f61fcd4d Ref git.kernel.org/stable/c/6c5124a60989051799037834f0a1a4b428718157 Ref git.kernel.org/stable/c/97250eb05e4b6afe787290e8fd97d0675116c61b Ref git.kernel.org/stable/c/aec888f44853584b5a7cd01249806030cf94a73d Ref git.kernel.org/stable/c/b1979778e98569c1e78c2c7f16bb24d76541ab00 Ref git.kernel.org/stable/c/ba45e3d6b02c97dbb4578fbae7027fd66f3caa10 Ref cert-portal.siemens.com/productcert/html/ssa-253495.html

Frequently Asked Questions

What is CVE-2026-23037?

CVE-2026-23037 is a known-severity vulnerability. It was published on January 31, 2026.

How severe is CVE-2026-23037?

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-2026-23037?

How can CyberStrike help with CVE-2026-23037?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-23037 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.