Ubuntu Security Notice 4968-2 - USN-4968-1 fixed a vulnerability in LZ4. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. 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. Various other issues were also addressed.
82af8b5f2df1dbee5f397fdec283ce1312ffcfd090e73923701d2913c7d88366