Answer in brief
CVE-2026-64042 records a Unknown severity vulnerability in vfio/pci: Check BAR resources before exporting a DMABUF. 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 | >=5d74781ebc86c5fa9e9d6934024c505412de9b52 <8443cd4497a4498c4b01058d76a92116244cb605 || >=5d74781ebc86c5fa9e9d6934024c505412de9b52 <702809dabdecca807bdd50cfdcc1c980feb2ba62 | 8443cd4497a4498c4b01058d76a92116244cb605, 702809dabdecca807bdd50cfdcc1c980feb2ba62 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
Jul 19, 2026
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: vfio/pci: Check BAR resources before exporting a DMABUF A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's possible to access unreserved resources through the export. Add a check to the DMABUF-creation path.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-64042 records a Unknown severity vulnerability in vfio/pci: Check BAR resources before exporting a DMABUF. 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 | >=5d74781ebc86c5fa9e9d6934024c505412de9b52 <8443cd4497a4498c4b01058d76a92116244cb605 || >=5d74781ebc86c5fa9e9d6934024c505412de9b52 <702809dabdecca807bdd50cfdcc1c980feb2ba62 | 8443cd4497a4498c4b01058d76a92116244cb605, 702809dabdecca807bdd50cfdcc1c980feb2ba62 |
| Linux/Linuxgeneric | 6.19 | Not reported |
Published upstream
Jul 19, 2026
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: vfio/pci: Check BAR resources before exporting a DMABUF A DMABUF exports access to BAR resources and, although they are requested at startup time, we need to ensure they really were reserved before exporting. Otherwise, it's possible to access unreserved resources through the export. Add a check to the DMABUF-creation path.
Quoted source text, attributed separately from HOL analysis.