CVE-2021-3520

Published: 30 April 2021

There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.

Priority

Medium

Status

Package Release Status
lz4
Launchpad, Ubuntu, Debian
Upstream
Released (1.9.3-2)
Ubuntu 21.04 (Hirsute Hippo)
Released (1.9.3-1ubuntu0.1)
Ubuntu 20.10 (Groovy Gorilla)
Released (1.9.2-2ubuntu0.20.10.1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1.9.2-2ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.0~r131-2ubuntu3.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (0.0~r131-2ubuntu2+esm1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (0.0~r114-2ubuntu1+esm2)
Patches:
Upstream: https://github.com/lz4/lz4/commit/8301a21773ef61656225e264f4f06ae14462bca7