Description (CNA)
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`.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a25e7962db0d79882c9d32fd2a67a02e79129c0e before 6166cb1344f16dd403f2192f4bea6f6654f1ae1e; affected a25e7962db0d79882c9d32fd2a67a02e79129c0e before 8646f00ce021e49f4f05bc1d4060a0c27b25d0e1; affected a25e7962db0d79882c9d32fd2a67a02e79129c0e before db50fb87015b955a5a0c155293b2dd40d63a3b9e |
| Linux / Linux | affected 6.16; unaffected 0 before 6.16; unaffected 6.18.57 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6166cb1344f16dd403f2192f4bea6f6654f1ae1e
- https://git.kernel.org/stable/c/8646f00ce021e49f4f05bc1d4060a0c27b25d0e1
- https://git.kernel.org/stable/c/db50fb87015b955a5a0c155293b2dd40d63a3b9e
ADP enrichment
No English description supplied.
No references supplied.