Integer overflow in Coldfunction Qcuda
CVE-2025-6603
A vulnerability was found in coldfunction qCUDA up to db0085400c2f2011eed46fbc04fdc0873141688e. It has been rated as problematic. Affected by this issue is the function qcow_make_empty of the file qCUDA/qcu-device/block/qcow.c. The manipulation of the argument s->l1_size leads to integer overflow. The attack needs to be approached locally. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Coldfunction Qcuda — versions db0085400c2f2011eed46fbc04fdc0873141688e
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/coldfunction/qCUDA/issues/10 (issue-tracking)
Frequently asked questions
- What is CVE-2025-6603?
- CVE-2025-6603 is a medium-severity vulnerability in Coldfunction Qcuda, classified under CWE-189. CVSS score: 5.3/10. Published 2025-06-25.
- How severe is CVE-2025-6603?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-6603 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.