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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2015-09-23 14:00:35 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-09-23 17:23:44 -0400 |
| commit | 0913eab648e4fb30ddca8882e707d0fcf5b237c6 (patch) | |
| tree | 7530627890f1194b61d0e8ba57eefcc5e42ab59d | |
| parent | 0d2edd3791bb172a59d708d5c94330bbd6050f97 (diff) | |
| download | linux-0913eab648e4fb30ddca8882e707d0fcf5b237c6.tar.gz | |
drm/amdgpu: info leak in amdgpu_gem_metadata_ioctl()
There is no limit on args->data.data_size_bytes so we could read beyond the end of the args->data.data[] array. Reviewed-by: Christian König <christian.koenig@amd.com> Reported-by: Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index 2f39fea10bd1..b82fab2cc888 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -427,6 +427,10 @@ int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, &args->data.data_size_bytes, &args->data.flags); } else if (args->op == AMDGPU_GEM_METADATA_OP_SET_METADATA) { + if (args->data.data_size_bytes > sizeof(args->data.data)) { + r = -EINVAL; + goto unreserve; + } r = amdgpu_bo_set_tiling_flags(robj, args->data.tiling_info); if (!r) r = amdgpu_bo_set_metadata(robj, args->data.data, @@ -434,6 +438,7 @@ int amdgpu_gem_metadata_ioctl(struct drm_device *dev, void *data, args->data.flags); } +unreserve: amdgpu_bo_unreserve(robj); out: drm_gem_object_unreference_unlocked(gobj); |