Answer in brief
CVE-2025-39978 records a Unknown severity vulnerability in octeontx2-pf: Fix potential use after free in otx2_tc_add_flow(). 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 | 5.14 | Not reported |
| Linux/Linuxgeneric | >=68fbff68dbea35f9e6f7649dd22fce492a5aedac <5723120423a753a220b8b2954b273838b9d7e74a || >=68fbff68dbea35f9e6f7649dd22fce492a5aedac <df2c071061ed52d2225d97b212d27ecedf456b8a || >=68fbff68dbea35f9e6f7649dd22fce492a5aedac <c41b2941a024d4ec7c768e16ffb10a74b188fced || >=68fbff68dbea35f9e6f7649dd22fce492a5aedac <a8a63f27c3a8a3714210d32b12fd0f16d0337414 || >=68fbff68dbea35f9e6f7649dd22fce492a5aedac <d9c70e93ec5988ab07ad2a92d9f9d12867f02c56 | 5723120423a753a220b8b2954b273838b9d7e74a, df2c071061ed52d2225d97b212d27ecedf456b8a, c41b2941a024d4ec7c768e16ffb10a74b188fced, a8a63f27c3a8a3714210d32b12fd0f16d0337414, d9c70e93ec5988ab07ad2a92d9f9d12867f02c56 |
| 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 15, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 8, 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: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node" and then dereferences it on the next line. Two lines later, we take a mutex so I don't think this is an RCU safe region. Re-order it to do the dereferences before queuing up the free.
Quoted source text, attributed separately from HOL analysis.