Commit c966b627 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau: prevent userspace from deleting client object 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 96692b09

drivers/gpu/drm/nouveau/nouveau_usif.c

+2 −1
Original line number Diff line number Diff line
@@ -313,7 +313,8 @@ usif_ioctl(struct drm_file *filp, void __user *user, u32 argc) 
	if (!(ret = nvif_unpack(-ENOSYS, &data, &size, argv->v0, 0, 0, true))) {

		/* block access to objects not created via this interface */

		owner = argv->v0.owner;

		if (argv->v0.object == 0ULL)

		if (argv->v0.object == 0ULL &&

		    argv->v0.type != NVIF_IOCTL_V0_DEL)

			argv->v0.owner = NVDRM_OBJECT_ANY; /* except client */

		else

			argv->v0.owner = NVDRM_OBJECT_USIF;