PT-2026-61166 · Linux+1 · Linux Kernel+1

CVE-2026-63849

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Published

2026-07-19

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Updated

2026-09-07

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The VCN encoder and decoder rings in the drm/amdgpu/vcn component do not support 64-bit user fence writes. This issue leads to the rejection of CS submissions that utilize user fences.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Related Identifiers

CVE-2026-63849
USN-8593-1
USN-8603-1
USN-8618-1
USN-8663-1
USN-8664-1
USN-8728-1

Affected Products

Linux Kernel
Ubuntu