CVE-2020-27153

bluez: double free in gatttool client disconnect callback handler in src/shared/att.c could lead to DoS or RCE

Published Oct 15, 2020 CVSS 3.1 · 8.6 High EPSS 4.3% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2410-1 bluez security update
Debian DSA Debian DSA DSA-4951-1 bluez security update
EUVD EUVD EUVD-2020-19677 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.
Ubuntu USN Ubuntu USN USN-4989-1 BlueZ vulnerabilities
Ubuntu USN Ubuntu USN USN-4989-2 BlueZ vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Apr 15, 2026, 9:08 PM
Reserved
Oct 15, 2020, 12:00 AM
Status
Modified
Published
Oct 15, 2020, 3:15 AM
Modified
Jun 17, 2026, 3:08 AM
Severity
Moderate
Public date
Sep 6, 2020, 12:00 AM