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OpenAdvisories
High USN-4989-2 2 CVEs

bluez vulnerabilities

Published Jun 16, 2021 · Updated Jun 25, 2026

Summary

USN-4989-1 fixed several vulnerabilities in BlueZ. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that BlueZ incorrectly checked certain permissions when
pairing. A local attacker could possibly use this issue to impersonate
devices. (CVE-2020-26558)

Jay LV discovered that BlueZ incorrectly handled redundant disconnect MGMT
events. A local attacker could use this issue to cause BlueZ to crash,
resulting in a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-27153)

Fixed packages 1

ReleasePackageFixed in
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS bluez 5.37-0ubuntu5.3+esm1

Vulnerabilities 2

References

  • report
    https://ubuntu.com/security/CVE-2020-26558
  • report
    https://ubuntu.com/security/CVE-2020-27153