CVE-2026-68240
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel, the drm/gpusvm driver had a device mapping leak on error during page retrieval. The fix publishes dpagemap early so the error path can properly unmap those mappings.
Risk Assessment
Device mapping leak can lead to improper memory management, potentially affecting system stability or resource exhaustion.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that eliminates the device mapping leak.
Original NVD description (English source)
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.