CVE-2026-89802

CVE CVE-2026-89802EUVD EUVD-2026-80402Published 2026-09-16T10:30:35.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau/uvmm: fix NULL deref unwinding an OP_MAP_SPARSE op Each bind_job_op is zeroed by kzalloc_obj() in bind_job_op_from_uop(), and the OP_MAP_SPARSE case in nouveau_uvmm_bind_job_submit() only creates a region, so op->ops stays NULL for a successfully processed sparse map. If a later op in the same job fails, the reverse unwind loop revisits that op and calls drm_gpuva_ops_free(&uvmm->base, op->ops) unconditionally. drm_gpuva_ops_free() dereferences its argument right away (list_for_each_entry_safe on &ops->list), so a NULL op->ops oopses. The path is reachable by any render-node fd holder, since NOUVEAU_VM_BIND is DRM_RENDER_ALLOW. Guard the free with IS_ERR_OR_NULL(), as nouveau_uvmm_bind_job_cleanup() already does for the identical free.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux b88baab828713ce0b49b185444b2ee83bed373a8 <b7dc03e09313d22a6d230b759de3b05d504c008f; patch: 7.2.5; patch: 7.3-rc2; patch: 6.18.51; patch: 0; b88baab828713ce0b49b185444b2ee83bed373a8 <3857238de6bce6c1573e8cb86c37b067e5208f05; b88baab828713ce0b49b185444b2ee83bed373a8 <3bf493cf7ed0c2b3df728977a257e0d99b4db1c6; patch: 6.12.110; b88baab828713ce0b49b185444b2ee83bed373a8 <412a6ceb56d501ef2f8202e26ab4b5d4dfbca566; 6.6

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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