Description
Heap-based buffer overflow in dns.cpp in InspIRCd 2.0.5 might allow remote attackers to execute arbitrary code via a crafted DNS query that uses compression.
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 13 | inspircd | 2.0.5-0.1 | — |
| Debian 12 | inspircd | 2.0.5-0.1 | — |
| Debian 7 | inspircd | 1.1.22+dfsg-4+wheezy1 | DSA-2448-1 |
| Debian 6.0 | inspircd | 1.1.22+dfsg-4+squeeze1 | DSA-2448-1 |
Advisories 1
- DSA-2448-1 inspircd - buffer overflow Debian Security (DSA / DLA) · Mar 9, 2026
References
- 52561 vdb-entry
- 80263 vdb-entry
- DSA-2448 vendor-advisory
- inspircd-dns-bo(74157) vdb-entry
- 48474 third-party-advisory
- https://github.com/inspircd/inspircd/commit/fe7dbd2c104c37f6f3af7d9f1646a3c332aea4a4
- VU#212651 third-party-advisory