PT-2025-44148 · Linux+4 · Linux Kernel+4
Published
2025-09-09
·
Updated
2026-05-07
·
CVE-2025-40080
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel had a flaw in the Network Block Device (NBD) module where it permitted the use of various socket types, leading to potential abuse. Specifically, a testing tool named syzbot exploited NBD using unsupported socket types. A previous commit aimed to ensure sockets supported a shutdown method, but did not fully restrict the allowed socket types. The issue was addressed by explicitly accepting only TCP and UNIX stream sockets.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
RCE
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Suse
Ubuntu