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

Quick assessment

Affected
coldfunction qCUDA
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

qCUDA是coldfunction个人开发者的一个虚拟化软件。 qCUDA存在输入验证错误漏洞，该漏洞源于qcow_make_empty函数对参数s->l1_size处理不当，可能导致整数溢出。

CVSS 5.3 · Medium EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2025-6603

Vulnerability Information
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Vulnerability Title
coldfunction qCUDA qcow.c qcow_make_empty integer overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
qCUDA 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
qCUDA是coldfunction个人开发者的一个虚拟化软件。 qCUDA存在输入验证错误漏洞，该漏洞源于qcow_make_empty函数对参数s->l1_size处理不当，可能导致整数溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
coldfunction qCUDA db0085400c2f2011eed46fbc04fdc0873141688e -

II. Public POCs for CVE-2025-6603

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III. Intelligence Information for CVE-2025-6603

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IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2025-6603

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