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CVE-2026-80677

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: driver core: use READ_ONCE() for dev->driver in dev_has_sync_state() dev_has_sync_state() reads dev->driver twice without holdi…

Published Aug 28, 2026EPSS 0.18%

Overview

CVE-2026-80677 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

driver core: use READ_ONCE() for dev->driver in dev_has_sync_state()

dev_has_sync_state() reads dev->driver twice without holding

device_lock() -- once for the NULL check and once to dereference

->sync_state. Some callers only hold device_links_write_lock, which

doesn't prevent a concurrent unbind from clearing dev->driver via

device_unbind_cleanup().

Fix it by reading dev->driver exactly once with READ_ONCE(), pairing

with the WRITE_ONCE() in device_set_driver().

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/358697929351f619143f59c6a8a15a4994748b79Refgit.kernel.org/stable/c/51b3e1de53ee5b7775c7ff90e67fdb2665fce938Refgit.kernel.org/stable/c/5e79e0180515b31b2e2244dc3d256fd8b5a07021Refgit.kernel.org/stable/c/860885fcd2611bca8c28dac8b2c1c7ff160f763eRefgit.kernel.org/stable/c/89789e4c141904506163dcb91c7289a074573931Refgit.kernel.org/stable/c/9b0f4082a09760939588135d60a8e9cc994bfa3eRefgit.kernel.org/stable/c/cc77f0d91e3214e4292208f02a1dc09a31f9aac7Refgit.kernel.org/stable/c/e9506871a8ea304cde48ff4a57226df2aadddae3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80677?

CVE-2026-80677 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-80677?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-80677?

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-2026-80677?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80677 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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