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CVE-2026-68434

Published Aug 12, 2026 EPSS 0.18% (7th pctl)

Overview

CVE-2026-68434 is a known-severity vulnerability. It was published on August 12, 2026.

Technical Description

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

serial: 8250_mid: Fix NULL function pointer dereference on DNV/ICX-D/SNR platforms

Commit b1b4efea05a5 ("serial: 8250_mid: Disable DMA for selected

platforms") replaced the dnv_board setup and exit callbacks with

PTR_IF(false, ...), which evaluates to NULL. However, the three call

sites in mid8250_probe() and mid8250_remove() unconditionally

dereference these function pointers without NULL checks, causing a NULL

pointer dereference (kernel oops) on any Denverton (DNV), Ice Lake Xeon

D (ICX-D/CDF), or Snowridge (SNR) platform.

Fix this by adding the missing NULL checks before calling the setup and

exit callbacks.

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/1096397c31f6bffa95e77bdd18fbca085be83e10 Ref git.kernel.org/stable/c/4ea933a36a14bec19b71025cdd8407bafbd67ec1 Ref git.kernel.org/stable/c/600dcd548fb2b00a69f447684f52ba45d5a3540e Ref git.kernel.org/stable/c/7fb13fd7e9a59a37cd911efff83abe19e3ee029d Ref git.kernel.org/stable/c/8cbad52ccfa6a7f089cfab34979bc6cc3bff25be Ref git.kernel.org/stable/c/b2a3eeb57ba24f8a0e34a69d40adcc63e5b9ca56 Ref git.kernel.org/stable/c/bdaa8871b53fe9b1730ef64dda2fcd662fd83339 Ref git.kernel.org/stable/c/f85a42fb90399dedcf81c146d09c07e4548b1e8c

Frequently Asked Questions

What is CVE-2026-68434?

CVE-2026-68434 is a known-severity vulnerability. It was published on August 12, 2026.

How severe is CVE-2026-68434?

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-2026-68434?

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-2026-68434?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-68434 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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