Answer in brief
CVE-2025-71197 records a Unknown severity vulnerability in w1: therm: Fix off-by-one buffer overflow in alarms_store. 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-2025-71197 records a Unknown severity vulnerability in w1: therm: Fix off-by-one buffer overflow in alarms_store. 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 | >=e2c94d6f572079511945e64537eb1218643f2e68 <49ff9b4b9deacbefa6654a0a2bcaf910c9de7e95 || >=e2c94d6f572079511945e64537eb1218643f2e68 <060b08d72a38b158a7f850d4b83c17c2969e0f6b || >=e2c94d6f572079511945e64537eb1218643f2e68 <b3fc3e1f04dcc7c41787bbf08a6e0d2728e022cf || >=e2c94d6f572079511945e64537eb1218643f2e68 <6a5820ecfa5a76c3d3e154802c8c15f391ef442e || >=e2c94d6f572079511945e64537eb1218643f2e68 <6fd6d2a8e41b7f544a4d26cbd60bedf9c67893a0 || >=e2c94d6f572079511945e64537eb1218643f2e68 <e6b2609af21b5cccc9559339591b8a2cbf884169 || >=e2c94d6f572079511945e64537eb1218643f2e68 <761fcf46a1bd797bd32d23f3ea0141ffd437668a | 49ff9b4b9deacbefa6654a0a2bcaf910c9de7e95, 060b08d72a38b158a7f850d4b83c17c2969e0f6b, b3fc3e1f04dcc7c41787bbf08a6e0d2728e022cf, 6a5820ecfa5a76c3d3e154802c8c15f391ef442e, 6fd6d2a8e41b7f544a4d26cbd60bedf9c67893a0, e6b2609af21b5cccc9559339591b8a2cbf884169, 761fcf46a1bd797bd32d23f3ea0141ffd437668a |
| Linux/Linuxgeneric | 5.8 | 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
Feb 4, 2026
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: w1: therm: Fix off-by-one buffer overflow in alarms_store The sysfs buffer passed to alarms_store() is allocated with 'size + 1' bytes and a NUL terminator is appended. However, the 'size' argument does not account for this extra byte. The original code then allocated 'size' bytes and used strcpy() to copy 'buf', which always writes one byte past the allocated buffer since strcpy() copies until the NUL terminator at index 'size'. Fix this by parsing the 'buf' parameter directly using simple_strtoll() without allocating any intermediate memory or string copying. This removes the overflow while simplifying the code.
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 | >=e2c94d6f572079511945e64537eb1218643f2e68 <49ff9b4b9deacbefa6654a0a2bcaf910c9de7e95 || >=e2c94d6f572079511945e64537eb1218643f2e68 <060b08d72a38b158a7f850d4b83c17c2969e0f6b || >=e2c94d6f572079511945e64537eb1218643f2e68 <b3fc3e1f04dcc7c41787bbf08a6e0d2728e022cf || >=e2c94d6f572079511945e64537eb1218643f2e68 <6a5820ecfa5a76c3d3e154802c8c15f391ef442e || >=e2c94d6f572079511945e64537eb1218643f2e68 <6fd6d2a8e41b7f544a4d26cbd60bedf9c67893a0 || >=e2c94d6f572079511945e64537eb1218643f2e68 <e6b2609af21b5cccc9559339591b8a2cbf884169 || >=e2c94d6f572079511945e64537eb1218643f2e68 <761fcf46a1bd797bd32d23f3ea0141ffd437668a | 49ff9b4b9deacbefa6654a0a2bcaf910c9de7e95, 060b08d72a38b158a7f850d4b83c17c2969e0f6b, b3fc3e1f04dcc7c41787bbf08a6e0d2728e022cf, 6a5820ecfa5a76c3d3e154802c8c15f391ef442e, 6fd6d2a8e41b7f544a4d26cbd60bedf9c67893a0, e6b2609af21b5cccc9559339591b8a2cbf884169, 761fcf46a1bd797bd32d23f3ea0141ffd437668a |
| Linux/Linuxgeneric | 5.8 | 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
Feb 4, 2026
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: w1: therm: Fix off-by-one buffer overflow in alarms_store The sysfs buffer passed to alarms_store() is allocated with 'size + 1' bytes and a NUL terminator is appended. However, the 'size' argument does not account for this extra byte. The original code then allocated 'size' bytes and used strcpy() to copy 'buf', which always writes one byte past the allocated buffer since strcpy() copies until the NUL terminator at index 'size'. Fix this by parsing the 'buf' parameter directly using simple_strtoll() without allocating any intermediate memory or string copying. This removes the overflow while simplifying the code.
Quoted source text, attributed separately from HOL analysis.