1. Ubuntu Security Notices
  2. USN-5759-2

USN-5759-2: LibBPF vulnerabilities

Publication date

8 December 2022

Overview

Several security issues were fixed in LibBPF.

Releases

Packages

  • libbpf - eBPF helper library (development files)

Details

USN-5759-1 fixed vulnerabilities in LibBPF. This update provides the
corresponding updates for Ubuntu 20.04 ESM.

Original advisory details:

It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 22.10.
(CVE-2021-45940, CVE-2021-45941, CVE-2022-3533)

It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2022-3534, CVE-2022-3606)

USN-5759-1 fixed vulnerabilities in LibBPF. This update provides the
corresponding updates for Ubuntu 20.04 ESM.

Original advisory details:

It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only affected Ubuntu 22.10.
(CVE-2021-45940, CVE-2021-45941, CVE-2022-3533)

It was discovered that LibBPF incorrectly handled certain memory operations
under certain circumstances. An attacker could possibly use this issue to
cause LibBPF to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2022-3534, CVE-2022-3606)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal libbpf0 –  1:0.5.0-1~ubuntu20.04.1+esm1  

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References

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