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| author | Ben Skeggs <bskeggs@redhat.com> | 2016-05-25 17:11:40 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2017-01-31 20:05:25 +1000 |
| commit | c966b6279f610a24ac1d42dcbe30e10fa61220b2 (patch) | |
| tree | 5cb56dcbfa4042779d22ec9c4979133cd4def201 | |
| parent | 96692b097ba76d0c637ae8af47b29c73da33c9d0 (diff) | |
| download | linux-c966b6279f610a24ac1d42dcbe30e10fa61220b2.tar.bz2 | |
drm/nouveau: prevent userspace from deleting client object
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_usif.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_usif.c b/drivers/gpu/drm/nouveau/nouveau_usif.c index 08f9c6fa0f7f..1fba38622744 100644 --- a/drivers/gpu/drm/nouveau/nouveau_usif.c +++ b/drivers/gpu/drm/nouveau/nouveau_usif.c @@ -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; |