Debian Security Advisory

DLA-2657-1 lz4 -- LTS security update

Date Reported:
12 May 2021
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2021-3520.
More information:

It was discovered that there was a potential memory corruption vulnerability in the lz4 compression algorithm library.

  • CVE-2021-3520

    memory corruption due to an integer overflow bug caused by memmove argument

For Debian 9 Stretch, these problems have been fixed in version 0.0~r131-2+deb9u1.

We recommend that you upgrade your lz4 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: