Answer in brief
CVE-2025-40058 records a Unknown severity vulnerability in iommu/vt-d: Disallow dirty tracking if incoherent page walk. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f35f22cc760eb2c7034bf53251399685d611e03f <ebe16d245a00626bb87163862a1b07daf5475a3e || >=f35f22cc760eb2c7034bf53251399685d611e03f <8d096ce0e87bdc361f0b25d7943543bc53aa0b9e || >=f35f22cc760eb2c7034bf53251399685d611e03f <57f55048e564dedd8a4546d018e29d6bbfff0a7e | ebe16d245a00626bb87163862a1b07daf5475a3e, 8d096ce0e87bdc361f0b25d7943543bc53aa0b9e, 57f55048e564dedd8a4546d018e29d6bbfff0a7e |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Oct 28, 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: iommu/vt-d: Disallow dirty tracking if incoherent page walk Dirty page tracking relies on the IOMMU atomically updating the dirty bit in the paging-structure entry. For this operation to succeed, the paging- structure memory must be coherent between the IOMMU and the CPU. In another word, if the iommu page walk is incoherent, dirty page tracking doesn't work. The Intel VT-d specification, Section 3.10 "Snoop Behavior" states: "Remapping hardware encountering the need to atomically update A/EA/D bits in a paging-structure entry that is not snooped will result in a non- recoverable fault." To prevent an IOMMU from being incorrectly configured for dirty page tracking when it is operating in an incoherent mode, mark SSADS as supported only when both ecap_slads and ecap_smpwc are supported.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-40058 records a Unknown severity vulnerability in iommu/vt-d: Disallow dirty tracking if incoherent page walk. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f35f22cc760eb2c7034bf53251399685d611e03f <ebe16d245a00626bb87163862a1b07daf5475a3e || >=f35f22cc760eb2c7034bf53251399685d611e03f <8d096ce0e87bdc361f0b25d7943543bc53aa0b9e || >=f35f22cc760eb2c7034bf53251399685d611e03f <57f55048e564dedd8a4546d018e29d6bbfff0a7e | ebe16d245a00626bb87163862a1b07daf5475a3e, 8d096ce0e87bdc361f0b25d7943543bc53aa0b9e, 57f55048e564dedd8a4546d018e29d6bbfff0a7e |
| Linux/Linuxgeneric | 6.7 | Not reported |
Published upstream
Oct 28, 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: iommu/vt-d: Disallow dirty tracking if incoherent page walk Dirty page tracking relies on the IOMMU atomically updating the dirty bit in the paging-structure entry. For this operation to succeed, the paging- structure memory must be coherent between the IOMMU and the CPU. In another word, if the iommu page walk is incoherent, dirty page tracking doesn't work. The Intel VT-d specification, Section 3.10 "Snoop Behavior" states: "Remapping hardware encountering the need to atomically update A/EA/D bits in a paging-structure entry that is not snooped will result in a non- recoverable fault." To prevent an IOMMU from being incorrectly configured for dirty page tracking when it is operating in an incoherent mode, mark SSADS as supported only when both ecap_slads and ecap_smpwc are supported.
Quoted source text, attributed separately from HOL analysis.