CVE-2026-74420

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges VMAs marked with VM_IO or VM_PFNMAP are not backed by struct page objects, which GPUSVM requires in order to operate correctly. In particular, get_pages() relies on hmm_range_fault() to resolve struct pages for the target range. Attempting to create an SVM range on such VMAs results in repeated get_pages() failures and can lead to an infinite loop inside a driver’s page‑fault handler. Prevent this by rejecting ranges on VM_IO or VM_PFNMAP VMAs and returning -EIO.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/353f26c74660bcbd8d82cd76622748e14a5a5db3
https://git.kernel.org/stable/c/63f443384979563f16f70420f4fa85bba31238ca
https://git.kernel.org/stable/c/b82a225e57a334335a21462b75ee2223bc6efe6d

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:19

NVD link : CVE-2026-74420

Mitre link : CVE-2026-74420

CVE.ORG link : CVE-2026-74420

JSON object : View

Products Affected

No product.

CWE

No CWE.

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