CVE-2026-46237

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vcn3: Avoid overflow on msg bound check

As pointed out by SDL, the previous condition may be vulnerable to overflow.

(cherry picked from commit db00257ac9e4a51eb2515aaea161a019f7125e10)

This flaw is rated as Moderate severity rather than Important because exploitation is constrained to local users with access to AMD GPU device interfaces and primarily results in a denial of service. The vulnerability stems from improper integer bounds validation when processing messages in the VCN 3.0 subsystem of the amdgpu driver. Systems are only exposed if AMD graphics hardware utilizing VCN 3 is installed and the corresponding kernel driver is active, which is uncommon in typical server environments.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.