Answer in brief
CVE-2025-39697 records a High severity (CVSS 7.8) vulnerability in NFS: Fix a race when updating an existing write. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/SIMATIC CN 4100 (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 7.8. 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 CN 4100 (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <0ff42a32784e0f2cb46a46da8e9f473538c13e1b || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <f230d40147cc37eb3aef4d50e2e2c06ea73d9a77 || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <c32e3c71aaa1c1ba05da88605e2ddd493c58794f || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <181feb41f0b268e6288bf9a7b984624d7fe2031d || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <92278ae36935a54e65fef9f8ea8efe7e80481ace || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <202a3432d21ac060629a760fff3b0a39859da3ea || >=bd37d6fce184836bd5e7cd90ce40116a4fadaf2a <76d2e3890fb169168c73f2e4f8375c7cc24a765e | 0ff42a32784e0f2cb46a46da8e9f473538c13e1b, f230d40147cc37eb3aef4d50e2e2c06ea73d9a77, c32e3c71aaa1c1ba05da88605e2ddd493c58794f, 181feb41f0b268e6288bf9a7b984624d7fe2031d, 92278ae36935a54e65fef9f8ea8efe7e80481ace, 202a3432d21ac060629a760fff3b0a39859da3ea, 76d2e3890fb169168c73f2e4f8375c7cc24a765e |
| Linux/Linuxgeneric | 4.14 | Not reported |
| Siemens/SIMATIC CN 4100generic | >=0 <V5.0 | V5.0 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.5 <* | * |
Published upstream
Sep 5, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: NFS: Fix a race when updating an existing write After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request().
Quoted source text, attributed separately from HOL analysis.