NVIDIA open GPU kernel module: missing self-reference guard in map cleanup gives a use-after-free
Impact
The Resource Server's map cleanup path does not guard against an object referencing itself, so cleanup frees memory that is still in use. An unprivileged local user can set up the self-referencing mapping deliberately, which makes this more deterministic than a timing-dependent race. This is in the open-source kernel module that NVIDIA now ships by default on recent datacenter boards, so most current fleets are running the affected code.
Who can reach it
Local, unprivileged. Any tenant with a GPU pod or a local user with the NVIDIA device nodes.
What to do
Update to the driver branch from NVIDIA bulletin 2026/5861; the record states no fixed version. Rebuild or reinstall the open kernel modules, then drain and reboot each GPU node; verify DKMS rebuilt the module before returning the node to the pool.
References
Related entries
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- NVIDIA GPU driver: error-handling path operates on an improperly initialized resourceCVE-2026-47600 · NVIDIA GPU Display Driver for Windows and Linux (kernel mode layer, error handling)High
- NVIDIA open GPU kernel module: read-only DMA-BUF imported from another device becomes writableCVE-2026-47601 · NVIDIA open GPU kernel module (DMA-BUF import path)High
- Linux kernel amdgpu user-mode queues (doorbell submission path) (drm/amdgpu): A double free in the amdgpu user-modeCVE-2026-52987 · Linux kernel amdgpu user-mode queues (doorbell submission path) (drm/amdgpu)High
- Linux kernel amdgpu display core (DC/DM) (drm/amd/display): An out-of-bounds access in the amdgpu display core (DC/DM)CVE-2026-53136 · Linux kernel amdgpu display core (DC/DM) (drm/amd/display)High
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This entry is curated: imported from vendor advisories with machine assistance, not yet individually verified. Confirm against your vendor's advisory before acting, and report anything wrong.