Description
irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode).
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 | weechat | 2.7.1-1 | — |
| Debian 13 | weechat | 2.7.1-1 | — |
| Debian 12 | weechat | 2.7.1-1 | — |
| Debian 9 | weechat | 1.6-1+deb9u3 | DLA-2770-1 |
| Debian 8 | weechat | 1.0.1-1+deb8u3 | DLA-2157-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | weechat | 2.8-1ubuntu0.1~esm1 | USN-5258-1 |
| Ubuntu Pro 18.04 LTS | weechat | 1.9.1-1ubuntu1+esm1 | USN-5258-1 |
| Ubuntu Pro 16.04 LTS | weechat | 1.4-2ubuntu0.1+esm1 | USN-5258-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP1 | weechat | 2.1-bp151.4.3.1 | openSUSE-SU-2020:0248-1 |
| SUSE Package Hub 15 | weechat | 2.1-bp151.4.3.1 | openSUSE-SU-2020:0248-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | weechat | 3.2-1.3 | openSUSE-SU-2024:11508-1 |
| openSUSE Leap 15.1 | weechat | 2.1-bp151.4.3.1 | openSUSE-SU-2020:0248-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | weechat | 2.7.1-r0 | — |
| Alpine v3.23 | weechat | 2.7.1-r0 | — |
| Alpine v3.22 | weechat | 2.7.1-r0 | — |
| Alpine v3.21 | weechat | 2.7.1-r0 | — |
| Alpine v3.20 | weechat | 2.7.1-r0 | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | weechat | 2.7.1-r0 | — |
| Alpine v3.18 | weechat | 2.7.1-r0 | — |
| Alpine v3.17 | weechat | 2.7.1-r0 | — |
| Alpine v3.16 | weechat | 2.7.1-r0 | — |
| Alpine v3.15 | weechat | 2.7.1-r0 | — |
| Alpine v3.14 | weechat | 2.7.1-r0 | — |
| Alpine v3.13 | weechat | 2.7.1-r0 | — |
| Alpine v3.12 | weechat | 2.7.1-r0 | — |
| Alpine v3.11 | weechat | 2.7.1-r0 | — |
Advisories 5
- USN-5258-1 weechat vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- DLA-2770-1 weechat - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2157-1 weechat - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:11508-1 weechat-3.2-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0248-1 Security update for weechat SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://weechat.org/doc/security/
- https://github.com/weechat/weechat/commit/6f4f147d8e86adf9ad34a8ffd7e7f1f23a7e74da
- openSUSE-SU-2020:0248 vendor-advisory
- FEDORA-2020-4d232b48b8 vendor-advisory
- FEDORA-2020-db890b4800 vendor-advisory
- [debian-lts-announce] 20200324 [SECURITY] [DLA 2157-1] weechat security update mailing-list
- GLSA-202003-51 vendor-advisory
- FEDORA-2020-d242130019 vendor-advisory
- [debian-lts-announce] 20210930 [SECURITY] [DLA 2770-1] weechat security update mailing-list