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CVE-2026-68449

Published Aug 12, 2026 EPSS 0.16% (6th pctl)

Overview

CVE-2026-68449 is a known-severity vulnerability. It was published on August 12, 2026.

Technical Description

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

ata: sata_dwc_460ex: fix infinite loop in NCQ tag completion bit-scanning

The hand-rolled bit-scanning loop in the NCQ completion path has an

infinite loop bug. When tag_mask has only high bits set (e.g.

0x80000000), the inner while loop left-shifts tag_mask until it

overflows to 0. At that point !(0 & 1) is always true and 0 <<= 1

stays 0, causing an infinite loop in hardirq context with a spinlock

held.

Replace the open-coded bit-scanning with __ffs() which correctly

finds the least significant set bit and is bounded by the width of

the argument.

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/1842d45f461a78988254631893329bdf4596e954 Ref git.kernel.org/stable/c/29b916d3556bd12a95be7c56ca391b8cd572f8be Ref git.kernel.org/stable/c/4c6e64cae2b2dab32ad9099faa339f6a72c0ce16 Ref git.kernel.org/stable/c/8c5de0d8ab6824cfdadcbbe1be4c6c9d9f4c1f80 Ref git.kernel.org/stable/c/c2130f6553f4a5cbdc259de069600117a995f197 Ref git.kernel.org/stable/c/d72e8089dc332ac48293512ef0de77cbe0e04d25 Ref git.kernel.org/stable/c/ea9fa4dabe476f85fe73df30a6ab61a23c22fda4

Frequently Asked Questions

What is CVE-2026-68449?

CVE-2026-68449 is a known-severity vulnerability. It was published on August 12, 2026.

How severe is CVE-2026-68449?

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-2026-68449?

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-2026-68449?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-68449 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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