medium6.1
CVE-2026-116842
DevilutionX 1.4.0 through 1.5.5 contains a heap buffer overflow vulnerability in the bundled libmpq libmpq__archive_dup routine when opening crafted MPQ archiv…
Impact
DevilutionX 1.4.0 through 1.5.5 contains a heap buffer overflow vulnerability in the bundled libmpq libmpq__archive_dup routine when opening crafted MPQ archives. Attackers can supply an MPQ archive whose block table count exceeds its hash table count, causing memcpy to overflow the heap during startup and crash the game.
Affected products
| Product | Affected versions |
|---|---|
| DevilutionX 1.4.0 | through 1.5.5 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-g75x-vcw6-3m3f
- https://nvd.nist.gov/vuln/detail/CVE-2026-116842
- https://github.com/diasurgical/DevilutionX/issues/8758
- https://github.com/diasurgical/DevilutionX/pull/8482
- https://github.com/diasurgical/DevilutionX/blob/7223eeac9e8274fbf665b4de86fda26d3b22c52f/3rdParty/libmpq/CMakeLists.txt
- https://github.com/diasurgical/libmpq/blob/b78d66c6fee6a501cc9b95d8556a129c68841b05/libmpq/mpq.c#L505
- https://hackmd.io/@haindpwn/devilutionx-libmpq-hash-block-table-oob
- https://www.vulncheck.com/advisories/devilutionx-1.4.0-through-1.5.5-heap-buffer-overflow-via-libmpq-archive-dup
- https://hackmd.io/@haindpwn/cve-2026-116841-116842-devilutionx-libmpq-hash-block-table-oob