Description
IRC client irssi in irssi-text before 0.8.4 allows remote attackers to cause a denial of service (crash) via an IRC channel that has a long topic followed by a certain string, possibly triggering a buffer overflow.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.0 | irssi-text | 0.8.4-3.1 | DSA-157 |
Advisories 1
- DSA-157 irssi-text - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
References
- irssi-long-topic-dos(9395) vdb-entry
- DSA-157 vendor-advisory
- 5055 vdb-entry