CVE-2026-63852

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)

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-25)

CWE

CWE-20

Published

2026-07-19

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/0177ac6141c8857130cf365369c74dee7b6b1f7f
• https://git.kernel.org/stable/c/387b7c7667bd5c53549350ddad866d2fcf75a529
• https://git.kernel.org/stable/c/4532b52b34e4e4310386e6fdf6a643368599f522
• https://git.kernel.org/stable/c/9076a83e5adefd10dc5c967c7b8bde601c4c512a
• https://git.kernel.org/stable/c/c12a5d35033c0640c57c10d7111c010c7b9c2c8e

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