CVE-2026-74532 Bluetooth: btintel: Validate length before parsing diagnostics TLV
An attacker within Bluetooth range can read out-of-bounds memory due to missing length validation in Intel Bluetooth diagnostics parsing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-74532?
CVE-2026-74532 is a vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btintel: Validate length before parsing diagnostics TLV
btintel_diagnostics() accesses tlv->val[0] without first validating that the diagnostics VSE is long enough to contain that field, so may cause reading data beyond the received frame.
Fix by validating the length before access.
Which versions are affected by CVE-2026-74532?
How do I fix CVE-2026-74532?
Apply the vendor's patch.
Is CVE-2026-74532 being exploited?
There is no known exploitation of CVE-2026-74532 in the wild and no public exploit code.
Sources
Also known as AZL-96051, BELL-CVE-2026-74532, DEBIAN-CVE-2026-74532, GHSA-rfm8-6v7m-6rj9, UBUNTU-CVE-2026-74532.