It was discovered that zlib, vendored in klibc, did not properly handle integer arithmetic. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service.
2.0.10-4ubuntu0.22.0.13-4ubuntu0.22.0.13-4ubuntu1.12.0.14-1ubuntu1.12.0.3-0ubuntu1.14.04.3+esm42.0.4-8ubuntu1.16.04.4+esm32.0.4-9ubuntu2.2+esm22.0.7-1ubuntu5.2+esm1