CVE-2026-92505
iommu/amd: Fix undefined behavior in devid_write debugfs function
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix undefined behavior in devid_write debugfs function When for_each_pci_segment() loop completes without finding a matching segment, the pci_seg pointer is not NULL but points to an invalid memory location (the list head). Accessing pci_seg->id after the loop causes undefined behavior. Fix this by handling the successful case inside the loop and returning -EINVAL after the loop if no matching segment is found.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
2e98940f123d9c69d4759078aea9a536244c98d3 < 8aabe0fba01486b5d893e708b05a8fa7f1b7efbb 2e98940f123d9c69d4759078aea9a536244c98d3 < 99d42aef089a07cfb1d404a7227ac9dc7628b497 2e98940f123d9c69d4759078aea9a536244c98d3 < 843e149989665f8309ad2efe6048dc76591e1f94
Linux / Linux
6.17