What’s Vulnerable › Vulnerabilities

CVE-2026-68391: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-19
• Weakness: CWE-416

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.

Affected products

• Linux kernel: 6.0 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/84674dd1d3192ecb050827d3148642609c0c9dbb
• https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc
• https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0
• https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46
• https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734
• https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172

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