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CVE-2026-74459

Published Aug 15, 2026 EPSS 0.17% (7th pctl)

Overview

CVE-2026-74459 is a known-severity vulnerability. It was published on August 15, 2026.

Technical Description

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

can: etas_es58x: es58x_read_bulk_callback(): fix RX buffer leak on URB resubmit failure

es58x_read_bulk_callback() resubmits the RX URB after processing a received

packet. If the resubmit succeeds, the URB remains anchored and will be

handled by the normal RX path or by teardown.

However, if usb_submit_urb() fails, the callback unanchors the URB and then

returns directly. This skips the existing free_urb path, so the coherent

transfer buffer allocated with usb_alloc_coherent() is not released.

Reuse the existing free_urb path after a resubmit failure so that the RX

coherent buffer is freed before leaving the callback.

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/0ef136ba052101243ba117a1aca6f4a4c3a81142 Ref git.kernel.org/stable/c/19c6c8c6cd5dd14fab5fcd744584812a57cbb78d Ref git.kernel.org/stable/c/21da1a374769751546cc131e58a4d8bd968f57b2 Ref git.kernel.org/stable/c/7a0cf2b2497c757c3cb1286eddf2986abb0d387b Ref git.kernel.org/stable/c/b85e5c310382803d27adf6fe6554d4208bc8951c Ref git.kernel.org/stable/c/c311f17c261fd375ddf5755f2ebe1f022c19c5b0 Ref git.kernel.org/stable/c/c7ddf119544eea2d8409e12471c3f9f36ca02e3f

Frequently Asked Questions

What is CVE-2026-74459?

CVE-2026-74459 is a known-severity vulnerability. It was published on August 15, 2026.

How severe is CVE-2026-74459?

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-2026-74459?

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-2026-74459?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-74459 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.

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