Answer in brief
CVE-2026-74277 records a Unknown severity vulnerability in iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path. 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 | >=a25e7962db0d79882c9d32fd2a67a02e79129c0e <8646f00ce021e49f4f05bc1d4060a0c27b25d0e1 || >=a25e7962db0d79882c9d32fd2a67a02e79129c0e <db50fb87015b955a5a0c155293b2dd40d63a3b9e | 8646f00ce021e49f4f05bc1d4060a0c27b25d0e1, db50fb87015b955a5a0c155293b2dd40d63a3b9e |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path In iommu_dma_map_sg(), when handling PCI P2PDMA cases, the DMA length of the current scatterlist segment `s` is incorrectly assigned from the head entry `sg->length` instead of the current entry `s->length`. This typo causes all P2PDMA segments in the scatterlist to inherit the length of the first segment, leading to corrupted DMA lengths for multi- segment scatterlists. Fix this by using `s->length` instead of `sg->length`.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-74277 records a Unknown severity vulnerability in iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path. 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 | >=a25e7962db0d79882c9d32fd2a67a02e79129c0e <8646f00ce021e49f4f05bc1d4060a0c27b25d0e1 || >=a25e7962db0d79882c9d32fd2a67a02e79129c0e <db50fb87015b955a5a0c155293b2dd40d63a3b9e | 8646f00ce021e49f4f05bc1d4060a0c27b25d0e1, db50fb87015b955a5a0c155293b2dd40d63a3b9e |
| Linux/Linuxgeneric | 6.16 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path In iommu_dma_map_sg(), when handling PCI P2PDMA cases, the DMA length of the current scatterlist segment `s` is incorrectly assigned from the head entry `sg->length` instead of the current entry `s->length`. This typo causes all P2PDMA segments in the scatterlist to inherit the length of the first segment, leading to corrupted DMA lengths for multi- segment scatterlists. Fix this by using `s->length` instead of `sg->length`.
Quoted source text, attributed separately from HOL analysis.