Skip to content
OpenAdvisories
Unscored USN-4968-2 1 CVE

lz4 vulnerability

Published May 31, 2021 · Updated Jun 29, 2026

Summary

USN-4968-1 fixed a vulnerability in LZ4. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that LZ4 incorrectly handled certain memory operations.
If a user or automated system were tricked into uncompressing a specially-
crafted LZ4 file, a remote attacker could use this issue to cause LZ4 to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

Fixed packages 2

ReleasePackageFixed in
Ubuntu · Pro 14.04 LTS Pro:14.04:LTS lz4 0.0~r114-2ubuntu1+esm2
Ubuntu · Pro 16.04 LTS Pro:16.04:LTS lz4 0.0~r131-2ubuntu2+esm1

Vulnerabilities 1

References

  • report
    https://ubuntu.com/security/CVE-2021-3520