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ALSA-2021:1598 Not scored

Moderate: bluez security update

The bluez packages contain the following utilities for use in Bluetooth applications: hcitool, hciattach, hciconfig, bluetoothd, l2ping, start scripts (AlmaLinux), and pcmcia configuration files. Security Fix(es): * bluez: double free in gatttool client disconnect callback handler in src/shared/att.c could lead to DoS or RCE (CVE-2020-27153) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

Exploit probability Not scored
Published May 18, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

AlmaLinux:8 bluez-libs-devel

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities ALSA-2021:1598

The bluez packages contain the following utilities for use in Bluetooth applications: hcitool, hciattach, hciconfig, bluetoothd, l2ping, start scripts (AlmaLinux), and pcmcia configuration files. Security Fix(es): * bluez: double free in gatttool client disconnect callback handler in src/shared/att.c could lead to DoS or RCE (CVE-2020-27153) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

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05 / REFERENCES

Further evidence