Description
Irssi 1.1.x before 1.1.2 has a use after free when hidden lines are expired from the scroll buffer.
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 | 1.1.2-1 | — |
| Debian 13 | irssi | 1.1.2-1 | — |
| Debian 12 | irssi | 1.1.2-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | irssi | 1.0.5-1ubuntu4.1 | USN-3862-1 |
| Ubuntu 16.04 LTS | irssi | 0.8.19-1ubuntu1.8 | USN-3862-1 |
| Ubuntu 14.04 LTS | irssi | 0.8.15-5ubuntu3.6 | USN-3862-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 | irssi | 1.1.2-bp150.3.4.1 | openSUSE-SU-2019:0048-1 |
| SUSE Package Hub 12 | irssi | 1.1.2-bp150.3.4.1 | openSUSE-SU-2019:0048-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | irssi | 1.2.3-2.4 | openSUSE-SU-2024:10865-1 |
| openSUSE Leap 15.0 | irssi | 1.1.2-bp150.3.4.1 | openSUSE-SU-2019:0048-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | irssi | 1.1.2-r0 | — |
| Alpine v3.23 | irssi | 1.1.2-r0 | — |
| Alpine v3.22 | irssi | 1.1.2-r0 | — |
| Alpine v3.21 | irssi | 1.1.2-r0 | — |
| Alpine v3.20 | irssi | 1.1.2-r0 | — |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | irssi | 1.1.2-r0 | — |
| Alpine v3.18 | irssi | 1.1.2-r0 | — |
| Alpine v3.17 | irssi | 1.1.2-r0 | — |
| Alpine v3.16 | irssi | 1.1.2-r0 | — |
| Alpine v3.15 | irssi | 1.1.2-r0 | — |
| Alpine v3.14 | irssi | 1.1.2-r0 | — |
| Alpine v3.13 | irssi | 1.1.2-r0 | — |
| Alpine v3.12 | irssi | 1.1.2-r0 | — |
| Alpine v3.11 | irssi | 1.1.2-r0 | — |
| Alpine v3.10 | irssi | 1.1.2-r0 | — |
| Alpine v3.9 | irssi | 1.1.2-r0 | — |
| Alpine v3.8 | irssi | 1.1.2-r0 | — |
Advisories 3
- USN-3862-1 irssi vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10865-1 irssi-1.2.3-2.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:0048-1 Security update for irssi SUSE / openSUSE Security Updates · Feb 4, 2026