In Irssi before 1.0.3, when receiving a DCC message without source nick/host, it attempts to dereference a NULL pointer. Thus, remote IRC servers can cause a crash.
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 | * | 1.0.2 (including) |
| Irssi | Ubuntu | devel | * |
| Irssi | Ubuntu | trusty | * |
| Irssi | Ubuntu | xenial | * |
| Irssi | Ubuntu | yakkety | * |
| Irssi | Ubuntu | zesty | * |