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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-74420

drm/gpusvm: Reject VMAs with VM_IO or VM_PFNMAP when creating SVM ranges

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 99624bdff8670795b678eafa6509aaad3a5c0175 to < 353f26c74660bcbd8d82cd76622748e14a5a5db3affected
  • 99624bdff8670795b678eafa6509aaad3a5c0175 to < 63f443384979563f16f70420f4fa85bba31238caaffected
  • 99624bdff8670795b678eafa6509aaad3a5c0175 to < b82a225e57a334335a21462b75ee2223bc6efe6daffected

Linux Linux

Default version status: affected

  • 6.15affected
  • 0 to < 6.15unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References