CVE-2025-40080nbd: restrict sockets to TCP and UDP
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from cf1b2326b734896734c6e167e41766f9cee7686a before c365e8f20f4201d873a70385bd919f0fb531e960; from cf1b2326b734896734c6e167e41766f9cee7686a before 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7; from cf1b2326b734896734c6e167e41766f9cee7686a before 37ad11f20e164c23ce827dd455b42c0fdd29685c; from cf1b2326b734896734c6e167e41766f9cee7686a before 808e2335bc1cf2293b9e36ccc94c267c81509c71; from cf1b2326b734896734c6e167e41766f9cee7686a before 9f7c02e031570e8291a63162c6c046dc15ff85b0; 4df728651b8a99693c69962d8e5a5b9e5a3bbcc7; 083322455c67d278c56a66b73f1221f004ee600a; 4fa1cbd587ef967812f9d9f6ce46ec1dead7502c; and 3 more ranges | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
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
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.