It was discovered that ntpd incorrectly handled memory when CMAC keys were used. A remote attacker could possibly use this issue to cause ntpd to crash resulting in a denial of service.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "binaries": [ { "binary_name": "ntp", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "ntp-dbgsym", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "ntp-doc", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "ntpdate", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "ntpdate-dbgsym", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "sntp", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" }, { "binary_name": "sntp-dbgsym", "binary_version": "1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1" } ] }