Description
In certain cases, Irssi before 1.0.5 may fail to verify that a Safe channel ID is long enough, causing reads beyond the end of the string.
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 14 | irssi | 1.0.5-1 | — |
| Debian 13 | irssi | 1.0.5-1 | — |
| Debian 12 | irssi | 1.0.5-1 | — |
| Debian 9 | irssi | 1.0.2-1+deb9u3 | DSA-4016-1 |
| Debian 8 | irssi | 0.8.17-1+deb8u5 | DSA-4016-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | irssi | 0.8.15-5+deb7u4 | DLA-1217-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | irssi | 0.8.19-1ubuntu1.5 | USN-3465-1 |
| Ubuntu 14.04 LTS | irssi | 0.8.15-5ubuntu3.3 | USN-3465-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 12 | irssi | 1.0.5-32.1 | openSUSE-SU-2017:2835-1, openSUSE-SU-2017:2832-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | irssi | 1.2.3-2.4 | openSUSE-SU-2024:10865-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | irssi | 1.0.5-r0 | — |
| Alpine v3.23 | irssi | 1.0.5-r0 | — |
| Alpine v3.22 | irssi | 1.0.5-r0 | — |
| Alpine v3.21 | irssi | 1.0.5-r0 | — |
| Alpine v3.20 | irssi | 1.0.5-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | irssi | 1.0.5-r0 | — |
| Alpine v3.18 | irssi | 1.0.5-r0 | — |
| Alpine v3.17 | irssi | 1.0.5-r0 | — |
| Alpine v3.16 | irssi | 1.0.5-r0 | — |
| Alpine v3.15 | irssi | 1.0.5-r0 | — |
| Alpine v3.14 | irssi | 1.0.5-r0 | — |
| Alpine v3.13 | irssi | 1.0.5-r0 | — |
| Alpine v3.12 | irssi | 1.0.5-r0 | — |
| Alpine v3.11 | irssi | 1.0.5-r0 | — |
| Alpine v3.10 | irssi | 1.0.5-r0 | — |
| Alpine v3.9 | irssi | 1.0.5-r0 | — |
| Alpine v3.8 | irssi | 1.0.5-r0 | — |
| Alpine v3.7 | irssi | 1.0.5-r0 | — |
| Alpine v3.6 | irssi | 1.0.6-r0 | — |
Advisories 6
- USN-3465-1 irssi vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-4016-1 irssi - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1217-1 irssi - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10865-1 irssi-1.2.3-2.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:2835-1 Security update for irssi SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2017:2832-1 Security update for irssi SUSE / openSUSE Security Updates · Feb 4, 2026