Answer in brief
CVE-2025-71266 records a Medium severity (CVSS 5.5) vulnerability in fs: ntfs3: check return value of indx_find to avoid infinite loop. 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-2025-71266 records a Medium severity (CVSS 5.5) vulnerability in fs: ntfs3: check return value of indx_find to avoid infinite loop. 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.
CVSS is 5.5. 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 | >=82cae269cfa953032fbb8980a7d554d60fb00b17 <14c3188afbedfd5178bbabb8002487ea14b37b56 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <435d34719db0e130f6f0c621d67ed524cc1a7d10 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <68e32694be231c1cdb99b7637a657314e88e1a96 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <398e768d1accd1f5645492ab996005d7aa84a5b0 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <b0ea441f44ce64fa514a415d4a9e6e2b06e7946c || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <0ad7a1be44479503dbe5c699759861ef5b8bd70c || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <1732053c8a6b360e2d5afb1b34fe9779398b072c | 14c3188afbedfd5178bbabb8002487ea14b37b56, 435d34719db0e130f6f0c621d67ed524cc1a7d10, 68e32694be231c1cdb99b7637a657314e88e1a96, 398e768d1accd1f5645492ab996005d7aa84a5b0, b0ea441f44ce64fa514a415d4a9e6e2b06e7946c, 0ad7a1be44479503dbe5c699759861ef5b8bd70c, 1732053c8a6b360e2d5afb1b34fe9779398b072c |
| Linux/Linuxgeneric | 5.15 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| 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
Mar 18, 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: fs: ntfs3: check return value of indx_find to avoid infinite loop We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed dentry in the ntfs3 filesystem can cause the kernel to hang during the lookup operations. By setting the HAS_SUB_NODE flag in an INDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the VCN pointer, an attacker can cause the indx_find() function to repeatedly read the same block, allocating 4 KB of memory each time. The kernel lacks VCN loop detection and depth limits, causing memory exhaustion and an OOM crash. This patch adds a return value check for fnd_push() to prevent a memory exhaustion vulnerability caused by infinite loops. When the index exceeds the size of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find() function checks this return value and stops processing, preventing further memory allocation.
Quoted source text, attributed separately from HOL analysis.
CVSS is 5.5. 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 | >=82cae269cfa953032fbb8980a7d554d60fb00b17 <14c3188afbedfd5178bbabb8002487ea14b37b56 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <435d34719db0e130f6f0c621d67ed524cc1a7d10 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <68e32694be231c1cdb99b7637a657314e88e1a96 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <398e768d1accd1f5645492ab996005d7aa84a5b0 || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <b0ea441f44ce64fa514a415d4a9e6e2b06e7946c || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <0ad7a1be44479503dbe5c699759861ef5b8bd70c || >=82cae269cfa953032fbb8980a7d554d60fb00b17 <1732053c8a6b360e2d5afb1b34fe9779398b072c | 14c3188afbedfd5178bbabb8002487ea14b37b56, 435d34719db0e130f6f0c621d67ed524cc1a7d10, 68e32694be231c1cdb99b7637a657314e88e1a96, 398e768d1accd1f5645492ab996005d7aa84a5b0, b0ea441f44ce64fa514a415d4a9e6e2b06e7946c, 0ad7a1be44479503dbe5c699759861ef5b8bd70c, 1732053c8a6b360e2d5afb1b34fe9779398b072c |
| Linux/Linuxgeneric | 5.15 | Not reported |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.6 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| 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
Mar 18, 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: fs: ntfs3: check return value of indx_find to avoid infinite loop We found an infinite loop bug in the ntfs3 file system that can lead to a Denial-of-Service (DoS) condition. A malformed dentry in the ntfs3 filesystem can cause the kernel to hang during the lookup operations. By setting the HAS_SUB_NODE flag in an INDEX_ENTRY within a directory's INDEX_ALLOCATION block and manipulating the VCN pointer, an attacker can cause the indx_find() function to repeatedly read the same block, allocating 4 KB of memory each time. The kernel lacks VCN loop detection and depth limits, causing memory exhaustion and an OOM crash. This patch adds a return value check for fnd_push() to prevent a memory exhaustion vulnerability caused by infinite loops. When the index exceeds the size of the fnd->nodes array, fnd_push() returns -EINVAL. The indx_find() function checks this return value and stops processing, preventing further memory allocation.
Quoted source text, attributed separately from HOL analysis.