Unrated severityOSV Advisory· Published Dec 17, 2025· Updated Dec 18, 2025
Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow
CVE-2025-67873
Description
Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.
Affected products
1- Range: 1.0, 2.0, 2.0-rc1, …
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3mitrex_refsource_MISC
- github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jgmitrex_refsource_CONFIRM
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