Answer in brief
CVE-2025-38083 records a Unknown severity vulnerability in net_sched: prio: fix a race in prio_tune(). 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-2025-38083 records a Unknown severity vulnerability in net_sched: prio: fix a race in prio_tune(). 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 | >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <53d11560e957d53ee87a0653d258038ce12361b7 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <4483d8b9127591c60c4eb789d6cab953bc4522a9 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <46c15c9d0f65c9ba857d63f53264f4b17e8a715f || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <e3f6745006dc9423d2b065b90f191cfa11b1b584 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <93f9eeb678d4c9c1abf720b3615fa8299a490845 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <d35acc1be3480505b5931f17e4ea9b7617fea4d3 | 53d11560e957d53ee87a0653d258038ce12361b7, 4483d8b9127591c60c4eb789d6cab953bc4522a9, 20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f, 3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4, 46c15c9d0f65c9ba857d63f53264f4b17e8a715f, e3f6745006dc9423d2b065b90f191cfa11b1b584, 93f9eeb678d4c9c1abf720b3615fa8299a490845, d35acc1be3480505b5931f17e4ea9b7617fea4d3 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| 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
Jun 20, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
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 | >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <53d11560e957d53ee87a0653d258038ce12361b7 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <4483d8b9127591c60c4eb789d6cab953bc4522a9 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <46c15c9d0f65c9ba857d63f53264f4b17e8a715f || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <e3f6745006dc9423d2b065b90f191cfa11b1b584 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <93f9eeb678d4c9c1abf720b3615fa8299a490845 || >=7b8e0b6e659983154c8d7e756cdb833d89a3d4d7 <d35acc1be3480505b5931f17e4ea9b7617fea4d3 | 53d11560e957d53ee87a0653d258038ce12361b7, 4483d8b9127591c60c4eb789d6cab953bc4522a9, 20f68e6a9e41693cb0e55e5b9ebbcb40983a4b8f, 3aaa7c01cf19d9b9bb64b88b65c3a6fd05da2eb4, 46c15c9d0f65c9ba857d63f53264f4b17e8a715f, e3f6745006dc9423d2b065b90f191cfa11b1b584, 93f9eeb678d4c9c1abf720b3615fa8299a490845, d35acc1be3480505b5931f17e4ea9b7617fea4d3 |
| Linux/Linuxgeneric | 5.0 | Not reported |
| 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
Jun 20, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: net_sched: prio: fix a race in prio_tune() Gerrard Tai reported a race condition in PRIO, whenever SFQ perturb timer fires at the wrong time. The race is as follows: CPU 0 CPU 1 [1]: lock root [2]: qdisc_tree_flush_backlog() [3]: unlock root | | [5]: lock root | [6]: rehash | [7]: qdisc_tree_reduce_backlog() | [4]: qdisc_put() This can be abused to underflow a parent's qlen. Calling qdisc_purge_queue() instead of qdisc_tree_flush_backlog() should fix the race, because all packets will be purged from the qdisc before releasing the lock.
Quoted source text, attributed separately from HOL analysis.