CVE-2026-68240
drm/gpusvm: publish dpagemap early to avoid device mapping leak on error
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.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Assign svm_pages->dpagemap when first device page is mapped.
- Ensure err_unmap path can device_unmap mappings.
- Apply the patch to the Linux kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68240.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68240 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68240
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68240 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68240 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': 'e8362523fd1b61712f7d996802f9b5dee545c7e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '72e4fca5529e45b5beebad79d804de442f632324', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '7f708f51e3955bda0d77a0b67ab9bea6c97fea99', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': 'e8362523fd1b61712f7d996802f9b5dee545c7e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '72e4fca5529e45b5beebad79d804de442f632324', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '7f708f51e3955bda0d77a0b67ab9bea6c97fea99', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': 'e8362523fd1b61712f7d996802f9b5dee545c7e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '72e4fca5529e45b5beebad79d804de442f632324', 'versionType': 'git'}, {'status': 'affected', 'version': 'f70da6f99d4f40c5f481c92e3b65d5e36eaa6dc9', 'lessThan': '7f708f51e3955bda0d77a0b67ab9bea6c97fea99', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.18'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.18', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/drm_gpusvm.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/72e4fca5529e45b5beebad79d804de442f632324 Added Reference https://git.kernel.org/stable/c/7f708f51e3955bda0d77a0b67ab9bea6c97fea99 Added Reference https://git.kernel.org/stable/c/e8362523fd1b61712f7d996802f9b5dee545c7e6