CVE-2026-89803 | Linux Kernel up to 6.12.109/6.18.50/7.2.4/7.3-rc1 Nouveau DRM Driver nouveau_channel.c nouveau_channel_del chan use after free (WID-SEC-2026-3438)

A vulnerability described as very critical has been identified in Linux Kernel up to 6.12.109/6.18.50/7.2.4/7.3-rc1. The affected element is the function nouveau_channel_del of the file drivers/gpu/drm/nouveau/nvkm/subdev/nvif/nouveau_channel.c of the component Nouveau DRM Driver. Such manipulation of the argument chan leads to use after free....