CVE-2026-80186

Bluez: stack overflow in name2utf8 causes dos and potential code execution

State: Published
Severity: 7.6 High
Published: Aug 25, 2026
Updated: Oct 16, 2026
Reserved: Aug 25, 2026

Description

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

Scores

CVSS	Score	Vector	Source
3.1	7.6 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	redhat

Weaknesses

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat

References

https://access.redhat.com/security/cve/CVE-2026-80186vdb-entry
RHBZ#2524132issue-tracking
https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975

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