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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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)
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- CISA KEV
- Not listed
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.