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USN-4989-1 Not scored

bluez vulnerabilities

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) Ziming Zhang discovered that BlueZ incorrectly handled certain array indexes. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2021-3588)

Exploit probability Not scored
Published June 16, 2021
Required by Not available
Last source change June 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Ubuntu:18.04:LTS bluez

7 explicit affected versions

Ubuntu:20.04:LTS bluez

9 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities USN-4989-1

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) Ziming Zhang discovered that BlueZ incorrectly handled certain array indexes. A local attacker could use this issue to cause BlueZ to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2021-3588)

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05 / REFERENCES

Further evidence