CVE-2020-27153

HIGH

BlueZ <5.55 - Use After Free

Title source: llm

Description

In BlueZ before 5.55, a double free was found in the gatttool disconnect_cb() routine from shared/att.c. A remote attacker could potentially cause a denial of service or code execution, during service discovery, due to a redundant disconnect MGMT event.

References (8)

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html

[Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=1884817

[Patch, Third Party Advisory] https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a

View Patch ZIP pw:eip

[Patch, Third Party Advisory] https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html

[Third Party Advisory] https://security.gentoo.org/glsa/202011-01

[Third Party Advisory] https://www.debian.org/security/2021/dsa-4951

Scores

CVSS v3 8.6

EPSS 0.0190

EPSS Percentile 83.0%

Attack Vector NETWORK

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

Classification

CWE

CWE-415

Status published

Affected Products (5)

bluez/bluez < 5.55

debian/debian_linux

debian/debian_linux

opensuse/leap

opensuse/leap

Timeline

Published Oct 15, 2020

Tracked Since Feb 18, 2026