CVE-2026-92505
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 17, 2026
First seenSep 17, 2026
How to fix
Update
- Linux Linux8aabe0fba01486b5d893e708b05a8fa7f1b7efbb, 99d42aef089a07cfb1d404a7227ac9dc7628b497, 843e149989665f8309ad2efe6048dc76591e1f94 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 2e98940f123d9c69d4759078aea9a536244c98d3 ≤ v < 8aabe0fba01486b5d893e708b05a8fa7f1b7efbb, 2e98940f123d9c69d4759078aea9a536244c98d3 ≤ v < 99d42aef089a07cfb1d404a7227ac9dc7628b497, 2e98940f123d9c69d4759078aea9a536244c98d3 ≤ v < 843e149989665f8309ad2efe6048dc76591e1f94, 6.17 | 8aabe0fba01486b5d893e708b05a8fa7f1b7efbb, 99d42aef089a07cfb1d404a7227ac9dc7628b497, 843e149989665f8309ad2efe6048dc76591e1f94 |
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