CVE-2026-74277
- Source
- https://cve.org/CVERecord?id=CVE-2026-74277
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74277.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-74277
- Downstream
- Published
- 2026-08-15T05:57:48Z
- Modified
- 2026-08-18T03:56:45Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- iommu/dma-iommu: Fix wrong scatterlist length assignment in P2PDMA path
- Details
-
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
sis incorrectly assigned from the head entrysg->lengthinstead of the current entrys->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->lengthinstead ofsg->length. - Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74277.json" }- References
-
- https://git.kernel.org/stable/c/8646f00ce021e49f4f05bc1d4060a0c27b25d0e1
- https://git.kernel.org/stable/c/db50fb87015b955a5a0c155293b2dd40d63a3b9e
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74277.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-74277
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git