Answer in brief
CVE-2025-40080 records a Unknown severity vulnerability in nbd: restrict sockets to TCP and UDP. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2025-40080 records a Unknown severity vulnerability in nbd: restrict sockets to TCP and UDP. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=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 | c365e8f20f4201d873a70385bd919f0fb531e960, 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7, 37ad11f20e164c23ce827dd455b42c0fdd29685c, 808e2335bc1cf2293b9e36ccc94c267c81509c71, 9f7c02e031570e8291a63162c6c046dc15ff85b0, 4.15, 4.20, 5.4 |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Oct 28, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=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 | c365e8f20f4201d873a70385bd919f0fb531e960, 4f9e6ff6319dbcebea64b50af0304cf0ad7e97e7, 37ad11f20e164c23ce827dd455b42c0fdd29685c, 808e2335bc1cf2293b9e36ccc94c267c81509c71, 9f7c02e031570e8291a63162c6c046dc15ff85b0, 4.15, 4.20, 5.4 |
| Linux/Linuxgeneric | 5.4 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
Published upstream
Oct 28, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.