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Ubuntu 22.10: 5759-2 Alert: LibBPF Buffer Overflow Leads to Security Breach

ubuntu
Calendar Grey December 5, 2022
Dist Ubuntu Esm H88
LibBPF encountered serious vulnerabilities patched in Ubuntu versions 22.04 and 22.10. Users at risk are urged to perform updates.
Several security issues were fixed in LibBPF.

Summary

Several security issues were fixed in LibBPF.

Software Description:

- libbpf: eBPF helper library (development files)

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)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu memory exploit libbpf

Update Instructions

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

Ubuntu 22.10:
  libbpf-dev                      1:0.8.0-1ubuntu22.10.1

Ubuntu 22.04 LTS:
  libbpf-dev                      1:0.5.0-1ubuntu22.04.1

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

References

https://ubuntu.com/security/notices/USN-5759-1

CVE-2021-45940, CVE-2021-45941, CVE-2022-3533, CVE-2022-3534,

CVE-2022-3606

Severity
critical
Lowest
Low
Medium
High
Critical

December 05, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu memory exploit libbpf

Package Information

https://launchpad.net/ubuntu/+source/libbpf/0.8.0-1ubuntu22.10.1

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