Answer in brief
CVE-2025-40135 records a Unknown severity vulnerability in ipv6: use RCU in ip6_xmit(). 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 1518-4 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-2025-40135 records a Unknown severity vulnerability in ipv6: use RCU in ip6_xmit(). 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 1518-4 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 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f0a54d00d2f36de40266f47c27989853e8588656 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f69fec6287565fdeb61f65e700a1184352306943 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <bd0905e2122e3680968cd0741966983490bf2ed3 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f7f9e924f23684b4b23cd9f976cceab24a968e34 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <9085e56501d93af9f2d7bd16f7fcfacdde47b99c | f0a54d00d2f36de40266f47c27989853e8588656, f69fec6287565fdeb61f65e700a1184352306943, bd0905e2122e3680968cd0741966983490bf2ed3, f7f9e924f23684b4b23cd9f976cceab24a968e34, 9085e56501d93af9f2d7bd16f7fcfacdde47b99c |
| Linux/Linuxgeneric | 4.13 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| 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/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Nov 12, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: ipv6: use RCU in ip6_xmit() Use RCU in ip6_xmit() in order to use dst_dev_rcu() to prevent possible UAF.
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 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f0a54d00d2f36de40266f47c27989853e8588656 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f69fec6287565fdeb61f65e700a1184352306943 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <bd0905e2122e3680968cd0741966983490bf2ed3 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <f7f9e924f23684b4b23cd9f976cceab24a968e34 || >=4a6ce2b6f2ecabbddcfe47e7cf61dd0f00b10e36 <9085e56501d93af9f2d7bd16f7fcfacdde47b99c | f0a54d00d2f36de40266f47c27989853e8588656, f69fec6287565fdeb61f65e700a1184352306943, bd0905e2122e3680968cd0741966983490bf2ed3, f7f9e924f23684b4b23cd9f976cceab24a968e34, 9085e56501d93af9f2d7bd16f7fcfacdde47b99c |
| Linux/Linuxgeneric | 4.13 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| 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/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Nov 12, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: ipv6: use RCU in ip6_xmit() Use RCU in ip6_xmit() in order to use dst_dev_rcu() to prevent possible UAF.
Quoted source text, attributed separately from HOL analysis.