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VULNERABILITIES

CVE-2026-68240 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:8.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://git.kernel.org/stable/c/72e4fca5529e45b5beebad79d804de442f632324 kernel.org
https://git.kernel.org/stable/c/7f708f51e3955bda0d77a0b67ab9bea6c97fea99 kernel.org
https://git.kernel.org/stable/c/e8362523fd1b61712f7d996802f9b5dee545c7e6 kernel.org

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-68240
NVD Published Date:
Aug 10, 2026
NVD Last Modified:
Aug 17, 2026
Source:
kernel.org
CVE-2026-68240 Details - Not Deferred