CVE-2025-40080

Published: Oct 28, 2025

Modified: May 23, 2026

PUBLISHED

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.

Vendor	Product	Versions
Linux	Linux	affected `cf1b2326b734896734c6e167e41766f9cee7686a - < c365e8f20f4201d873a70385bd919f0fb531e960` affected `cf1b2326b734896734c6e167e41766f9cee7686a - < 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7` affected `cf1b2326b734896734c6e167e41766f9cee7686a - < 37ad11f20e164c23ce827dd455b42c0fdd29685c` affected `cf1b2326b734896734c6e167e41766f9cee7686a - < 808e2335bc1cf2293b9e36ccc94c267c81509c71` affected `cf1b2326b734896734c6e167e41766f9cee7686a - < 9f7c02e031570e8291a63162c6c046dc15ff85b0` +6 more versions
Linux	Linux	affected `5.4` unaffected `0 - < 5.4` unaffected `6.1.156 - <= 6.1.` unaffected `6.6.112 - <= 6.6.` unaffected `6.12.53 - <= 6.12.*` +2 more versions

References

https://git.kernel.org/stable/c/c365e8f20f4201d873a70385bd919f0fb531e960

https://git.kernel.org/stable/c/4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7

https://git.kernel.org/stable/c/37ad11f20e164c23ce827dd455b42c0fdd29685c

https://git.kernel.org/stable/c/808e2335bc1cf2293b9e36ccc94c267c81509c71

https://git.kernel.org/stable/c/9f7c02e031570e8291a63162c6c046dc15ff85b0

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CVE-2025-40080

Description

Affected Products

References