What’s Vulnerable › Vulnerabilities

CVE-2026-80692: Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-10-21

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold conn in hci_connect_acl/le_sync() callbacks There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that.

Affected products

• Linux kernel: from 6.6.51 before 6.6.160; from 6.8.9 before 6.9; 6.9 — fixed in 6.6.160, 6.9, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.6.160, 6.9, 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2f5d635ad5906b0235bc0c870e8beba3116e1e98
• https://git.kernel.org/stable/c/301a4e2e89313dee10f0e8cb084daedbbe4a3dce
• https://git.kernel.org/stable/c/9a77f296aff4b2ca5f2928ab3a3220c82d8b4074
• https://git.kernel.org/stable/c/a4de6fc95b2f36967fc247ae51cad2171194f7cd
• https://git.kernel.org/stable/c/f0a544ef6e38e4063d0ed72ad83d6bf0f4e70805

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