What’s Vulnerable › Vulnerabilities

CVE-2026-74529: Bluetooth: hci_sync: hold conn in hci_connect_pa_sync() callback

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-10-21

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: hold conn in hci_connect_pa_sync() callback 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 6.12.28 before 6.12.114; from 6.14.6 before 6.15; 6.15 — fixed in 6.12.114, 6.15, 7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.12.114, 6.15, 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/40ef39f1d755ff8d54423345c73d187e77854d0b
• https://git.kernel.org/stable/c/44fc74069d8988f2825246f9401218e29de2c0ab
• https://git.kernel.org/stable/c/68ffe4265775ed9e09e18e9a3b388740e25257bf
• https://git.kernel.org/stable/c/c53c70ec289ee12f20c4f1b2fbfd151762c01f67

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