CVE-2026-68303
drm/vc4: hvs/v3d: Fix null dereference in unbind
Description
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hvs/v3d: Fix null dereference in unbind The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions. Since the vc4-drm gets removed before its dependent drivers (vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to get drvdata of its master and fails with a null dereference error. Use the data pointer passed to the unbind functions directly instead of dev_get_drvdata(master). This avoids using potentially freed memory.
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
Solution
- Use the data pointer passed to unbind functions directly.
- Avoid using potentially freed memory.
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-2026-68303.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215 | |
| https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68303 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-2026-68303
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-2026-68303 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68303 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': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '261f0a3f0ac03248284f5116d3258f89c9642215', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '7dc3680b7ffe01add3e9299fde8471d2dd53a8ae', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '261f0a3f0ac03248284f5116d3258f89c9642215', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '7dc3680b7ffe01add3e9299fde8471d2dd53a8ae', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'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/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'affected'}] -
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': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '261f0a3f0ac03248284f5116d3258f89c9642215', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8b75bca92cbf064b9fa125fc74a85994452e935', 'lessThan': '7dc3680b7ffe01add3e9299fde8471d2dd53a8ae', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/vc4/vc4_hvs.c', 'drivers/gpu/drm/vc4/vc4_v3d.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hvs/v3d: Fix null dereference in unbind The hvs and v3d drivers use dev_get_drvdata(master) in their unbind functions. Since the vc4-drm gets removed before its dependent drivers (vc4_hvs/vc4_v3d) the vc4_hvs_unbind/vc4_v3d_unbind functions try to get drvdata of its master and fails with a null dereference error. Use the data pointer passed to the unbind functions directly instead of dev_get_drvdata(master). This avoids using potentially freed memory. Added Reference https://git.kernel.org/stable/c/261f0a3f0ac03248284f5116d3258f89c9642215 Added Reference https://git.kernel.org/stable/c/7dc3680b7ffe01add3e9299fde8471d2dd53a8ae