CVE-2026-63852
drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa)
INFO
Published Date :
July 19, 2026, 3:16 p.m.
Last Modified :
July 19, 2026, 3:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-63852
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel.
- Apply the cherry-picked patch.
- Ensure VCN rings reject user fences.
- Configure VCN rings properly.
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-2026-63852.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-63852 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-2026-63852
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-2026-63852 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-63852 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 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': 'b889ef4ac98837838c38f7b9f72bba2f33ee367d', 'lessThan': 'c12a5d35033c0640c57c10d7111c010c7b9c2c8e', 'versionType': 'git'}, {'status': 'affected', 'version': 'b889ef4ac98837838c38f7b9f72bba2f33ee367d', 'lessThan': '387b7c7667bd5c53549350ddad866d2fcf75a529', 'versionType': 'git'}, {'status': 'affected', 'version': 'b889ef4ac98837838c38f7b9f72bba2f33ee367d', 'lessThan': '9076a83e5adefd10dc5c967c7b8bde601c4c512a', 'versionType': 'git'}, {'status': 'affected', 'version': 'b889ef4ac98837838c38f7b9f72bba2f33ee367d', 'lessThan': '0177ac6141c8857130cf365369c74dee7b6b1f7f', 'versionType': 'git'}, {'status': 'affected', 'version': 'b889ef4ac98837838c38f7b9f72bba2f33ee367d', 'lessThan': '4532b52b34e4e4310386e6fdf6a643368599f522', 'versionType': 'git'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.141', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.91', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.33', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.10', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/amd/amdgpu/vcn_v4_0_3.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vcn: set no_user_fence for VCN v4.0.3 enc ring VCN encoder and decoder rings do not support 64-bit user fence writes, reject CS submissions with user fences. (cherry picked from commit ff1a5a125c5a70c328806b9bc01d7d942cf3f9aa) Added Reference https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f Added Reference https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529 Added Reference https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522 Added Reference https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a Added Reference https://git.kernel.org/stable/c/c12a5d35033c0640c57c10d7111c010c7b9c2c8e