CVE-2025-47712— Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
Quick assessment
Affected
CVE-2025-47712
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.
Libguestfs nbdkit是Libguestfs社区的一个用于创建NBD（访问网络块设备的协议）服务端的应用软件。 Libguestfs nbdkit存在输入验证错误漏洞，该漏洞源于处理特定客户端请求时存在内部错误，可能导致拒绝服务攻击。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| None | None | 1.21.16< 1.38.6 |
affected |
1.40.0< 1.40.6 |
affected | ||
1.42.0< 1.42.3 |
affected | ||
| Red Hat | Red Hat Enterprise Linux 10 | any |
affected |
| Red Hat | Red Hat Enterprise Linux 7 | any |
unknown |
| Red Hat | Red Hat Enterprise Linux 8 | any |
unknown |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | any |
unknown |
any |
unknown | ||
| Red Hat | Red Hat Enterprise Linux 9 | any |
affected |
I. Basic Information for CVE-2025-47712
Vulnerability Information
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Vulnerability Title
Nbd: nbdkit: integer overflow triggers an assertion resulting in denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw exists in the nbdkit "blocksize" filter that can be triggered by a specific type of client request. When a client requests block status information for a very large data range, exceeding a certain limit, it causes an internal error in the nbdkit, leading to a denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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
Libguestfs nbdkit 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Libguestfs nbdkit是Libguestfs社区的一个用于创建NBD（访问网络块设备的协议）服务端的应用软件。 Libguestfs nbdkit存在输入验证错误漏洞，该漏洞源于处理特定客户端请求时存在内部错误，可能导致拒绝服务攻击。
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 |
|---|---|---|---|---|
| - | - | 1.21.16 ~ 1.38.6 | - |
|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | - |
cpe:/a:redhat:advanced_virtualization:8::el8
|
|
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | - |
cpe:/a:redhat:advanced_virtualization:8::el8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
II. Public POCs for CVE-2025-47712
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Mailing List Discussions for CVE-2025-47712 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2025-47712
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