CVE-2025-40080

Not scored yetLast modified Nov 10, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

nbd: restrict sockets to TCP and UDP

Recently, syzbot started to abuse NBD with all kinds of sockets.

Commit cf1b2326b734 ("nbd: verify socket is supported during setup") made sure the socket supported a shutdown() method.

Explicitely accept TCP and UNIX stream sockets.

Metrics

No CVSS score has been published yet.

Affected software

VendorProductVersions
LinuxLinux>= cf1b2326b734896734c6e167e41766f9cee7686a, < c365e8f20f4201d873a70385bd919f0fb531e960; >= cf1b2326b734896734c6e167e41766f9cee7686a, < 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7; >= cf1b2326b734896734c6e167e41766f9cee7686a, < 37ad11f20e164c23ce827dd455b42c0fdd29685c; >= cf1b2326b734896734c6e167e41766f9cee7686a, < 808e2335bc1cf2293b9e36ccc94c267c81509c71; >= cf1b2326b734896734c6e167e41766f9cee7686a, < 9f7c02e031570e8291a63162c6c046dc15ff85b0; 4df728651b8a99693c69962d8e5a5b9e5a3bbcc7; 083322455c67d278c56a66b73f1221f004ee600a; 4fa1cbd587ef967812f9d9f6ce46ec1dead7502c; >= 4.14.152, < 4.15; >= 4.19.82, < 4.20; >= 5.3.9, < 5.4
LinuxLinux5.4
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP>= V3.1.7, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.6, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP>= V3.1.7, < *

References

Timeline

Published
Oct 28, 2025
Last modified
Nov 10, 2026
NVD status
Deferred

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CVE-2025-40080: Unscored | Vulnix