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Vulnerability record · CVE-2020-27153 · published 15 October 2020

CVE-2020-27153: Bluez double free vulnerability

Bluez · Bluez

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.

8.6 CVSS 3.1 High EPSS 4.3% · top 9.2% CWE-415 · Double free
8.6CVSS 3.1 base score, v2 7.5
4.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

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.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1884817 Issue TrackingThird Party Advisory
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a PatchThird Party Advisory
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202011-01 Third Party Advisory
https://www.debian.org/security/2021/dsa-4951 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00034.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00036.html Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1884817 Issue TrackingThird Party Advisory
https://github.com/bluez/bluez/commit/1cd644db8c23a2f530ddb93cebed7dacc5f5721a PatchThird Party Advisory
https://github.com/bluez/bluez/commit/5a180f2ec9edfacafd95e5fed20d36fe8e077f07 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00022.html Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202011-01 Third Party Advisory
https://www.debian.org/security/2021/dsa-4951 Third Party Advisory

Track CVE-2020-27153 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-27153), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.