Ubuntu Security Notice 6373-1 - It was discovered that gawk could be made to read out of bounds when processing certain inputs. If a user or an automated system were tricked into opening a specially crafted input, an attacker could possibly use this issue to cause a denial of service.
e60ffba5f3bb81c9112e7d48cf85156e475a09fb25c3890104bb5881627d701c