CVE-2026-74277
iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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`.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
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Affected Versions
Linux / Linux
a25e7962db0d79882c9d32fd2a67a02e79129c0e < 8646f00ce021e49f4f05bc1d4060a0c27b25d0e1 a25e7962db0d79882c9d32fd2a67a02e79129c0e < db50fb87015b955a5a0c155293b2dd40d63a3b9e
Linux / Linux
6.16