When the channel topic is set without specifying a sender, Irssi before 1.0.6 may dereference a NULL pointer.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Irssi | Irssi | * | 1.0.6 (excluding) |
| Irssi | Ubuntu | artful | * |
| Irssi | Ubuntu | devel | * |
| Irssi | Ubuntu | trusty | * |
| Irssi | Ubuntu | xenial | * |
| Irssi | Ubuntu | zesty | * |