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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-68240

drm/gpusvm: publish dpagemap early to avoid device mapping leak on error

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: drm/gpusvm: publish dpagemap early to avoid device mapping leak on error drm_gpusvm_get_pages() only stored the local dpagemap into svm_pages->dpagemap on the success path. If a later page failed (e.g. -EOPNOTSUPP when ctx->allow_mixed is false) and jumped to err_unmap, svm_pages->dpagemap was still NULL, so __drm_gpusvm_unmap_pages() skipped device_unmap() and leaked the device mappings already created. Assign svm_pages->dpagemap when the first device page is mapped so the err_unmap path can device_unmap() those mappings. This issue was found by Sashiko AI review.

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

  • f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 to < e8362523fd1b61712f7d996802f9b5dee545c7e6affected
  • f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 to < 72e4fca5529e45b5beebad79d804de442f632324affected
  • f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9 to < 7f708f51e3955bda0d77a0b67ab9bea6c97fea99affected

Linux Linux

Default version status: affected

  • 6.18affected
  • 0 to < 6.18unaffected
  • 6.18.44 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References