Description
The Server-Server protocol implementation in ngIRCd before 26~rc2 allows an out-of-bounds access, as demonstrated by the IRC_NJOIN() function.
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 | ngircd | 26-1 | — |
| Debian 13 | ngircd | 26-1 | — |
| Debian 12 | ngircd | 26-1 | — |
| Debian 8 | ngircd | 22-2+deb8u1 | DLA-2252-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | ngircd | No fix yet | — |
| Ubuntu 18.04 LTS | ngircd | No fix yet | — |
| Ubuntu 16.04 LTS | ngircd | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | ngircd | 25-r1 | — |
| Alpine v3.23 | ngircd | 25-r1 | — |
| Alpine v3.22 | ngircd | 25-r1 | — |
| Alpine v3.21 | ngircd | 25-r1 | — |
| Alpine v3.20 | ngircd | 25-r1 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | ngircd | 25-r1 | — |
| Alpine v3.18 | ngircd | 25-r1 | — |
| Alpine v3.17 | ngircd | 25-r1 | — |
| Alpine v3.16 | ngircd | 25-r1 | — |
| Alpine v3.15 | ngircd | 25-r1 | — |
| Alpine v3.14 | ngircd | 25-r1 | — |
| Alpine v3.13 | ngircd | 25-r1 | — |
| Alpine v3.12 | ngircd | 25-r1 | — |
| Alpine v3.11 | ngircd | 25-r1 | — |
| Alpine v3.10 | ngircd | 25-r1 | — |
| Alpine v3.9 | ngircd | 24-r5 | — |
Advisories 1
- DLA-2252-1 ngircd - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/ngircd/ngircd/issues/274
- https://github.com/ngircd/ngircd/issues/277
- https://github.com/ngircd/ngircd/pull/275
- https://github.com/ngircd/ngircd/pull/276
- https://github.com/ngircd/ngircd/releases/tag/rel-26-rc2
- [debian-lts-announce] 20200621 [SECURITY] [DLA 2252-1] ngircd security update mailing-list
- FEDORA-2020-8c33e3a771 vendor-advisory
- FEDORA-2020-e6d1d849c5 vendor-advisory