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Linux CVE-2026-74420

| EUVDEUVD-2026-59567
2026-08-15 Linux GHSA-rwh9-4wc5-hmq7

Lifecycle Timeline

2
Patch available
Aug 15, 2026 - 07:19 EUVD
CVE Published
Aug 15, 2026 - 05:59 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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.

Analysis

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. …

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CVE-2026-74420 vulnerability details – vuln.today

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