mei: mei_cl_link protect open_handle_count from overflow
mei_cl_link is called both from mei_open and also from in-kernel drivers so we need to protect open_handle_count from overflow Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -287,6 +287,12 @@ int mei_cl_link(struct mei_cl *cl, int id)
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return -ENOENT;
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return -ENOENT;
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}
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}
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if (dev->open_handle_count >= MEI_MAX_OPEN_HANDLE_COUNT) {
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dev_err(&dev->pdev->dev, "open_handle_count exceded %d",
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MEI_MAX_OPEN_HANDLE_COUNT);
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return -ENOENT;
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}
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dev->open_handle_count++;
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dev->open_handle_count++;
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cl->host_client_id = id;
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cl->host_client_id = id;
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