CVE-2026-92505iommu/amd: Fix undefined behavior in devid_write debugfs function
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 2e98940f123d9c69d4759078aea9a536244c98d3 before 8aabe0fba01486b5d893e708b05a8fa7f1b7efbb; from 2e98940f123d9c69d4759078aea9a536244c98d3 before 99d42aef089a07cfb1d404a7227ac9dc7628b497; from 2e98940f123d9c69d4759078aea9a536244c98d3 before 843e149989665f8309ad2efe6048dc76591e1f94 | CNA record |
References
- https://git.kernel.org/stable/c/8aabe0fba01486b5d893e708b05a8fa7f1b7efbb
- https://git.kernel.org/stable/c/99d42aef089a07cfb1d404a7227ac9dc7628b497
- https://git.kernel.org/stable/c/843e149989665f8309ad2efe6048dc76591e1f94
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.