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CVE-2026-46186

kernel: Bluetooth: virtio_bt: validate rx pkt_type header length

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 28, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's virtio_bt (Bluetooth virtual device driver). An untrusted backend can exploit this vulnerability by sending malformed Bluetooth packets with an insufficient header length. This can cause the system to read uninitialized kernel memory, potentially leading to information disclosure or a denial of service by flooding the kernel log.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-805 · Buffer Access with Incorrect Length Value