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
capstone-engine: capstone
References3
- github.com/capstone-engine/capstone/security/advisories/GHSA-hj… ExploitVendor Advisory
- github.com/capstone-engine/capstone/security/advisories/GHSA-hj… ExploitVendor Advisory
- github.com/capstone-engine/capstone/commit/cbef767ab33b82166d26… Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 14 · as of 11 November 2026
- CWE
- CWE-122
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