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CVE-2026-68391

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical section…

Published Aug 10, 2026EPSS 0.13%

Overview

CVE-2026-68391 is a high-severity vulnerability. It was published on August 10, 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:

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

Dereferencing RCU-protected pointers outside critical sections is

invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also

needs to hold refcount to avoid UAF.

Take appropriate locks for hci_conn lookups, and take refcount for

hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays

valid.

When accessing conn->state, ensure hdev->lock is held to avoid data

race.

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/b56f2ecafc08f372bf0529f9c4f3f429cb1702dcRefgit.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0Refgit.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46Refgit.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734Refgit.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68391?

CVE-2026-68391 is a high-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-68391?

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-2026-68391?

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-2026-68391?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68391 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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