Oleg Bulyzhin

The issue involves certain conditions with the use of the highlight buffer while text is scrolling on the console. This can lead to console data overwriting data structures associated with the system console or other kernel memory.

The issue concerns a potential disruption of protected information and a denial of service. It can be exploited remotely. In Sendmail, when using the "enhdnsbl" feature, certain data structures are not properly initialized, allowing remote attackers to cause a process crash via an invalid DNS response.