Vulnerability · Published Jun 25, 2025 · Assigned by VulDB

CVE-2025-6603coldfunction qCUDA qcow.c qcow_make_empty integer overflow

Medium 5.3

In plain English

A medium-severity integer overflow in qCUDA from coldfunction. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.2%top 94.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
coldfunction	qCUDA	db0085400c2f2011eed46fbc04fdc0873141688e

Weakness: CWE-190, CWE-189 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R

References

VDB-313820 | coldfunction qCUDA qcow.c qcow_make_empty integer overflow vdb-entry, technical-description
VDB-313820 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #601029 | coldfunction qCUDA 0.0 Integer Overflow third-party-advisory
https://github.com/coldfunction/qCUDA/issues/10 issue-tracking