Integer overflow in the cs_winkernel_malloc function in winkernel_mm.c in Capstone 3.0.4…
Priority MEDIUM 41CWE-190Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-190 and the CVSS impact.
Summary
Integer overflow in the cs_winkernel_malloc function in winkernel_mm.c in Capstone 3.0.4 and earlier allows attackers to cause a denial of service (heap-based buffer overflow in a kernel driver) or possibly have unspecified other impact via a large value.
Why it matters now
EPSS 0.01245 69th percentileScored 2026-11-07
Fix Fixed capstone (PyPI): 3.0.5rc2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | capstone (PyPI) | before 3.0.5rc2 | 3.0.5rc2 | Patch available | GHSA-3v99-hpv7-9hh9 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- capstone (PyPI) Vendor— Affected before 3.0.5rc2 Fixed in 3.0.5rc2 Patch available GHSA-3v99-hpv7-9hh9
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:* | up to 3.0.4 | Vulnerable | capstone-engine |
- cpe:2.3:a:capstone-engine:capstone:*:*:*:*:*:*:*:* Versions up to 3.0.4 Vulnerable ·capstone-engine
Remediation
- Fix · GHSA-3v99-hpv7-9hh9 capstone (PyPI) Fixed in 3.0.5rc2 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6952
- 2026-10-03 Alias added: GHSA-3v99-hpv7-9hh9
References
More capstone-engine Capstone vulnerabilities
- TI-2025-41703 Capstone doesn't check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow CVSS 3.1CRITICAL 9.8
- TI-2025-41500 Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow CVSS 3.1HIGH 7.8
- TI-2026-34733 Capstone has a NULL Pointer Dereference with 3DNow! opcodes CVSS 3.1MEDIUM 5.9
- TI-2016-06150 Capstone 3.0.4 has an out-of-bounds vulnerability (SEGV caused by a read memory access)… CVSS 3.0MEDIUM 5.5
Sources
- CVE-2017-6952 · CVE Program
- CVE-2017-6952 · NVD
- FIRST EPSS
- GHSA-3v99-hpv7-9hh9 · GitHub Advisory Database · CC BY 4.0
- CVE-2017-6952 · Red Hat security data · CC BY 4.0
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