Public Date:
1663176: CVE-2019-3459 kernel: Heap address information leak while using L2CAP_GET_CONF_OPT
A flaw was found in the Linux kernel's implementation of Logical Link Control and Adaptation Protocol (L2CAP), part of the Bluetooth stack. An attacker, within the range of standard Bluetooth transmissions, can create and send a specially crafted packet. The response to this specially crafted packet can contain part of the kernel stack which can be used in a further attack.

Find out more about CVE-2019-3459 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

CVSS3 Base Score 5.3
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Impact None
Availability Impact None

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux for Real Time for NFV (v. 7) (kernel-rt) RHSA-2019:2043 2019-08-07
Red Hat Enterprise Linux 7 (kernel) RHSA-2019:2029 2019-08-06

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 kernel-rt Will not fix
Red Hat Enterprise Linux 8 kernel Affected
Red Hat Enterprise Linux 8 kernel-rt Affected
Red Hat Enterprise Linux 7 kernel-alt Affected
Red Hat Enterprise Linux 6 kernel Affected
Red Hat Enterprise Linux 5 kernel Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.


- Disabling the bluetooth hardware in the bios.
- Prevent loading of the bluetooth kernel modules.
- Disable the bluetooth connection by putting the system in "airport" mode.

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