Answer in brief
CVE-2021-46967 records a High severity (CVSS 7.8) vulnerability in vhost-vdpa: fix vm_flags for virtqueue doorbell mapping. 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.
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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6 || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <940230a5c31e2714722aee04c521a21f484b4df7 || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <93dbbf20e3ffad14f04227a0b7105f6e6f0387ce || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44 | 3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6, 940230a5c31e2714722aee04c521a21f484b4df7, 93dbbf20e3ffad14f04227a0b7105f6e6f0387ce, 3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44 |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Feb 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell mapping The virtqueue doorbell is usually implemented via registeres but we don't provide the necessary vma->flags like VM_PFNMAP. This may cause several issues e.g when userspace tries to map the doorbell via vhost IOTLB, kernel may panic due to the page is not backed by page structure. This patch fixes this by setting the necessary vm_flags. With this patch, try to map doorbell via IOTLB will fail with bad address.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-46967 records a High severity (CVSS 7.8) vulnerability in vhost-vdpa: fix vm_flags for virtqueue doorbell mapping. 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.
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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6 || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <940230a5c31e2714722aee04c521a21f484b4df7 || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <93dbbf20e3ffad14f04227a0b7105f6e6f0387ce || >=ddd89d0a059d8e9740c75a97e0efe9bf07ee51f9 <3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44 | 3b8b6399666a29daa30b0bb3f5c9e3fc81c5a6a6, 940230a5c31e2714722aee04c521a21f484b4df7, 93dbbf20e3ffad14f04227a0b7105f6e6f0387ce, 3a3e0fad16d40a2aa68ddf7eea4acdf48b22dd44 |
| Linux/Linuxgeneric | 5.8 | Not reported |
Published upstream
Feb 27, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
In the Linux kernel, the following vulnerability has been resolved: vhost-vdpa: fix vm_flags for virtqueue doorbell mapping The virtqueue doorbell is usually implemented via registeres but we don't provide the necessary vma->flags like VM_PFNMAP. This may cause several issues e.g when userspace tries to map the doorbell via vhost IOTLB, kernel may panic due to the page is not backed by page structure. This patch fixes this by setting the necessary vm_flags. With this patch, try to map doorbell via IOTLB will fail with bad address.
Quoted source text, attributed separately from HOL analysis.