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https://github.com/FEX-Emu/linux.git
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina: "Fixes for CVE-2013-2897, CVE-2013-2895, CVE-2013-2897, CVE-2013-2894, CVE-2013-2893, CVE-2013-2891, CVE-2013-2890, CVE-2013-2889. All the bugs are triggerable only by specially crafted evil-on-purpose HW devices. Fixes by Kees Cook and Benjamin Tissoires" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: HID: lenovo-tpkbd: fix leak if tpkbd_probe_tp fails HID: multitouch: validate indexes details HID: logitech-dj: validate output report details HID: validate feature and input report details HID: lenovo-tpkbd: validate output report details HID: LG: validate HID output report details HID: steelseries: validate output report details HID: sony: validate HID output report details HID: zeroplus: validate output report details HID: provide a helper for validating hid reports
This commit is contained in:
commit
84fca9f38c
@ -94,7 +94,6 @@ EXPORT_SYMBOL_GPL(hid_register_report);
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static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
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{
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struct hid_field *field;
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int i;
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if (report->maxfield == HID_MAX_FIELDS) {
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hid_err(report->device, "too many fields in report\n");
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@ -113,9 +112,6 @@ static struct hid_field *hid_register_field(struct hid_report *report, unsigned
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field->value = (s32 *)(field->usage + usages);
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field->report = report;
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for (i = 0; i < usages; i++)
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field->usage[i].usage_index = i;
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return field;
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}
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@ -226,9 +222,9 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
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{
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struct hid_report *report;
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struct hid_field *field;
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int usages;
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unsigned usages;
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unsigned offset;
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int i;
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unsigned i;
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report = hid_register_report(parser->device, report_type, parser->global.report_id);
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if (!report) {
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@ -255,7 +251,8 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
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if (!parser->local.usage_index) /* Ignore padding fields */
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return 0;
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usages = max_t(int, parser->local.usage_index, parser->global.report_count);
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usages = max_t(unsigned, parser->local.usage_index,
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parser->global.report_count);
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field = hid_register_field(report, usages, parser->global.report_count);
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if (!field)
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@ -266,13 +263,14 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
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field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
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for (i = 0; i < usages; i++) {
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int j = i;
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unsigned j = i;
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/* Duplicate the last usage we parsed if we have excess values */
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if (i >= parser->local.usage_index)
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j = parser->local.usage_index - 1;
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field->usage[i].hid = parser->local.usage[j];
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field->usage[i].collection_index =
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parser->local.collection_index[j];
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field->usage[i].usage_index = i;
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}
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field->maxusage = usages;
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@ -801,6 +799,64 @@ int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
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}
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EXPORT_SYMBOL_GPL(hid_parse_report);
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static const char * const hid_report_names[] = {
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"HID_INPUT_REPORT",
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"HID_OUTPUT_REPORT",
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"HID_FEATURE_REPORT",
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};
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/**
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* hid_validate_values - validate existing device report's value indexes
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*
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* @device: hid device
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* @type: which report type to examine
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* @id: which report ID to examine (0 for first)
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* @field_index: which report field to examine
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* @report_counts: expected number of values
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*
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* Validate the number of values in a given field of a given report, after
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* parsing.
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*/
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struct hid_report *hid_validate_values(struct hid_device *hid,
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unsigned int type, unsigned int id,
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unsigned int field_index,
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unsigned int report_counts)
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{
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struct hid_report *report;
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if (type > HID_FEATURE_REPORT) {
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hid_err(hid, "invalid HID report type %u\n", type);
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return NULL;
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}
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if (id >= HID_MAX_IDS) {
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hid_err(hid, "invalid HID report id %u\n", id);
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return NULL;
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}
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/*
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* Explicitly not using hid_get_report() here since it depends on
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* ->numbered being checked, which may not always be the case when
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* drivers go to access report values.
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*/
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report = hid->report_enum[type].report_id_hash[id];
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if (!report) {
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hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
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return NULL;
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}
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if (report->maxfield <= field_index) {
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hid_err(hid, "not enough fields in %s %u\n",
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hid_report_names[type], id);
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return NULL;
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}
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if (report->field[field_index]->report_count < report_counts) {
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hid_err(hid, "not enough values in %s %u field %u\n",
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hid_report_names[type], id, field_index);
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return NULL;
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}
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return report;
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}
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EXPORT_SYMBOL_GPL(hid_validate_values);
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/**
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* hid_open_report - open a driver-specific device report
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*
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@ -1296,7 +1352,7 @@ int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
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goto out;
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}
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if (hid->claimed != HID_CLAIMED_HIDRAW) {
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if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
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for (a = 0; a < report->maxfield; a++)
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hid_input_field(hid, report->field[a], cdata, interrupt);
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hdrv = hid->driver;
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@ -485,6 +485,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
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if (field->flags & HID_MAIN_ITEM_CONSTANT)
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goto ignore;
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/* Ignore if report count is out of bounds. */
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if (field->report_count < 1)
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goto ignore;
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/* only LED usages are supported in output fields */
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if (field->report_type == HID_OUTPUT_REPORT &&
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(usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
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@ -1236,7 +1240,11 @@ static void report_features(struct hid_device *hid)
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rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
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list_for_each_entry(rep, &rep_enum->report_list, list)
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for (i = 0; i < rep->maxfield; i++)
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for (i = 0; i < rep->maxfield; i++) {
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/* Ignore if report count is out of bounds. */
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if (rep->field[i]->report_count < 1)
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continue;
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for (j = 0; j < rep->field[i]->maxusage; j++) {
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/* Verify if Battery Strength feature is available */
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hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
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@ -1245,6 +1253,7 @@ static void report_features(struct hid_device *hid)
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drv->feature_mapping(hid, rep->field[i],
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rep->field[i]->usage + j);
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}
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}
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}
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static struct hid_input *hidinput_allocate(struct hid_device *hid)
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@ -339,7 +339,15 @@ static int tpkbd_probe_tp(struct hid_device *hdev)
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struct tpkbd_data_pointer *data_pointer;
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size_t name_sz = strlen(dev_name(dev)) + 16;
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char *name_mute, *name_micmute;
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int ret;
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int i, ret;
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/* Validate required reports. */
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for (i = 0; i < 4; i++) {
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if (!hid_validate_values(hdev, HID_FEATURE_REPORT, 4, i, 1))
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return -ENODEV;
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}
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if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 3, 0, 2))
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return -ENODEV;
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if (sysfs_create_group(&hdev->dev.kobj,
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&tpkbd_attr_group_pointer)) {
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@ -406,22 +414,27 @@ static int tpkbd_probe(struct hid_device *hdev,
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "hid_parse failed\n");
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goto err_free;
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goto err;
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}
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
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if (ret) {
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hid_err(hdev, "hid_hw_start failed\n");
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goto err_free;
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goto err;
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}
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uhdev = (struct usbhid_device *) hdev->driver_data;
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if (uhdev->ifnum == 1)
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return tpkbd_probe_tp(hdev);
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if (uhdev->ifnum == 1) {
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ret = tpkbd_probe_tp(hdev);
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if (ret)
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goto err_hid;
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}
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return 0;
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err_free:
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err_hid:
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hid_hw_stop(hdev);
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err:
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return ret;
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}
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@ -64,26 +64,13 @@ int lg2ff_init(struct hid_device *hid)
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struct hid_report *report;
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struct hid_input *hidinput = list_entry(hid->inputs.next,
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struct hid_input, list);
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struct list_head *report_list =
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&hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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int error;
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if (list_empty(report_list)) {
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hid_err(hid, "no output report found\n");
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/* Check that the report looks ok */
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report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7);
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if (!report)
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return -ENODEV;
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}
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report = list_entry(report_list->next, struct hid_report, list);
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if (report->maxfield < 1) {
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hid_err(hid, "output report is empty\n");
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return -ENODEV;
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}
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if (report->field[0]->report_count < 7) {
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hid_err(hid, "not enough values in the field\n");
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return -ENODEV;
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}
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lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL);
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if (!lg2ff)
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@ -66,10 +66,11 @@ static int hid_lg3ff_play(struct input_dev *dev, void *data,
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int x, y;
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/*
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* Maxusage should always be 63 (maximum fields)
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* likely a better way to ensure this data is clean
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* Available values in the field should always be 63, but we only use up to
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* 35. Instead, clear the entire area, however big it is.
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*/
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memset(report->field[0]->value, 0, sizeof(__s32)*report->field[0]->maxusage);
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memset(report->field[0]->value, 0,
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sizeof(__s32) * report->field[0]->report_count);
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switch (effect->type) {
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case FF_CONSTANT:
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@ -129,32 +130,14 @@ static const signed short ff3_joystick_ac[] = {
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int lg3ff_init(struct hid_device *hid)
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{
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
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struct input_dev *dev = hidinput->input;
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struct hid_report *report;
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struct hid_field *field;
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const signed short *ff_bits = ff3_joystick_ac;
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int error;
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int i;
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/* Find the report to use */
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if (list_empty(report_list)) {
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hid_err(hid, "No output report found\n");
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return -1;
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}
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|
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/* Check that the report looks ok */
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report = list_entry(report_list->next, struct hid_report, list);
|
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if (!report) {
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hid_err(hid, "NULL output report\n");
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return -1;
|
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}
|
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|
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field = report->field[0];
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if (!field) {
|
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hid_err(hid, "NULL field\n");
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return -1;
|
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}
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if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 35))
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return -ENODEV;
|
||||
|
||||
/* Assume single fixed device G940 */
|
||||
for (i = 0; ff_bits[i] >= 0; i++)
|
||||
|
@ -484,34 +484,16 @@ static enum led_brightness lg4ff_led_get_brightness(struct led_classdev *led_cde
|
||||
int lg4ff_init(struct hid_device *hid)
|
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{
|
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struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
|
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struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
||||
struct input_dev *dev = hidinput->input;
|
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struct hid_report *report;
|
||||
struct hid_field *field;
|
||||
struct lg4ff_device_entry *entry;
|
||||
struct lg_drv_data *drv_data;
|
||||
struct usb_device_descriptor *udesc;
|
||||
int error, i, j;
|
||||
__u16 bcdDevice, rev_maj, rev_min;
|
||||
|
||||
/* Find the report to use */
|
||||
if (list_empty(report_list)) {
|
||||
hid_err(hid, "No output report found\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Check that the report looks ok */
|
||||
report = list_entry(report_list->next, struct hid_report, list);
|
||||
if (!report) {
|
||||
hid_err(hid, "NULL output report\n");
|
||||
if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7))
|
||||
return -1;
|
||||
}
|
||||
|
||||
field = report->field[0];
|
||||
if (!field) {
|
||||
hid_err(hid, "NULL field\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Check what wheel has been connected */
|
||||
for (i = 0; i < ARRAY_SIZE(lg4ff_devices); i++) {
|
||||
|
@ -128,27 +128,14 @@ static void hid_lgff_set_autocenter(struct input_dev *dev, u16 magnitude)
|
||||
int lgff_init(struct hid_device* hid)
|
||||
{
|
||||
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
|
||||
struct list_head *report_list = &hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
||||
struct input_dev *dev = hidinput->input;
|
||||
struct hid_report *report;
|
||||
struct hid_field *field;
|
||||
const signed short *ff_bits = ff_joystick;
|
||||
int error;
|
||||
int i;
|
||||
|
||||
/* Find the report to use */
|
||||
if (list_empty(report_list)) {
|
||||
hid_err(hid, "No output report found\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Check that the report looks ok */
|
||||
report = list_entry(report_list->next, struct hid_report, list);
|
||||
field = report->field[0];
|
||||
if (!field) {
|
||||
hid_err(hid, "NULL field\n");
|
||||
return -1;
|
||||
}
|
||||
if (!hid_validate_values(hid, HID_OUTPUT_REPORT, 0, 0, 7))
|
||||
return -ENODEV;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(devices); i++) {
|
||||
if (dev->id.vendor == devices[i].idVendor &&
|
||||
|
@ -461,7 +461,7 @@ static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
|
||||
struct hid_report *report;
|
||||
struct hid_report_enum *output_report_enum;
|
||||
u8 *data = (u8 *)(&dj_report->device_index);
|
||||
int i;
|
||||
unsigned int i;
|
||||
|
||||
output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT];
|
||||
report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT];
|
||||
@ -471,7 +471,7 @@ static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev,
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
for (i = 0; i < report->field[0]->report_count; i++)
|
||||
for (i = 0; i < DJREPORT_SHORT_LENGTH - 1; i++)
|
||||
report->field[0]->value[i] = data[i];
|
||||
|
||||
hid_hw_request(hdev, report, HID_REQ_SET_REPORT);
|
||||
@ -791,6 +791,12 @@ static int logi_dj_probe(struct hid_device *hdev,
|
||||
goto hid_parse_fail;
|
||||
}
|
||||
|
||||
if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, REPORT_ID_DJ_SHORT,
|
||||
0, DJREPORT_SHORT_LENGTH - 1)) {
|
||||
retval = -ENODEV;
|
||||
goto hid_parse_fail;
|
||||
}
|
||||
|
||||
/* Starts the usb device and connects to upper interfaces hiddev and
|
||||
* hidraw */
|
||||
retval = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
|
||||
|
@ -101,9 +101,9 @@ struct mt_device {
|
||||
unsigned last_slot_field; /* the last field of a slot */
|
||||
unsigned mt_report_id; /* the report ID of the multitouch device */
|
||||
unsigned pen_report_id; /* the report ID of the pen device */
|
||||
__s8 inputmode; /* InputMode HID feature, -1 if non-existent */
|
||||
__s8 inputmode_index; /* InputMode HID feature index in the report */
|
||||
__s8 maxcontact_report_id; /* Maximum Contact Number HID feature,
|
||||
__s16 inputmode; /* InputMode HID feature, -1 if non-existent */
|
||||
__s16 inputmode_index; /* InputMode HID feature index in the report */
|
||||
__s16 maxcontact_report_id; /* Maximum Contact Number HID feature,
|
||||
-1 if non-existent */
|
||||
__u8 num_received; /* how many contacts we received */
|
||||
__u8 num_expected; /* expected last contact index */
|
||||
@ -312,20 +312,18 @@ static void mt_feature_mapping(struct hid_device *hdev,
|
||||
struct hid_field *field, struct hid_usage *usage)
|
||||
{
|
||||
struct mt_device *td = hid_get_drvdata(hdev);
|
||||
int i;
|
||||
|
||||
switch (usage->hid) {
|
||||
case HID_DG_INPUTMODE:
|
||||
td->inputmode = field->report->id;
|
||||
td->inputmode_index = 0; /* has to be updated below */
|
||||
|
||||
for (i=0; i < field->maxusage; i++) {
|
||||
if (field->usage[i].hid == usage->hid) {
|
||||
td->inputmode_index = i;
|
||||
break;
|
||||
}
|
||||
/* Ignore if value index is out of bounds. */
|
||||
if (usage->usage_index >= field->report_count) {
|
||||
dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
|
||||
break;
|
||||
}
|
||||
|
||||
td->inputmode = field->report->id;
|
||||
td->inputmode_index = usage->usage_index;
|
||||
|
||||
break;
|
||||
case HID_DG_CONTACTMAX:
|
||||
td->maxcontact_report_id = field->report->id;
|
||||
@ -511,6 +509,10 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
|
||||
mt_store_field(usage, td, hi);
|
||||
return 1;
|
||||
case HID_DG_CONTACTCOUNT:
|
||||
/* Ignore if indexes are out of bounds. */
|
||||
if (field->index >= field->report->maxfield ||
|
||||
usage->usage_index >= field->report_count)
|
||||
return 1;
|
||||
td->cc_index = field->index;
|
||||
td->cc_value_index = usage->usage_index;
|
||||
return 1;
|
||||
|
@ -537,6 +537,10 @@ static int buzz_init(struct hid_device *hdev)
|
||||
drv_data = hid_get_drvdata(hdev);
|
||||
BUG_ON(!(drv_data->quirks & BUZZ_CONTROLLER));
|
||||
|
||||
/* Validate expected report characteristics. */
|
||||
if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 7))
|
||||
return -ENODEV;
|
||||
|
||||
buzz = kzalloc(sizeof(*buzz), GFP_KERNEL);
|
||||
if (!buzz) {
|
||||
hid_err(hdev, "Insufficient memory, cannot allocate driver data\n");
|
||||
|
@ -249,6 +249,11 @@ static int steelseries_srws1_probe(struct hid_device *hdev,
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
if (!hid_validate_values(hdev, HID_OUTPUT_REPORT, 0, 0, 16)) {
|
||||
ret = -ENODEV;
|
||||
goto err_free;
|
||||
}
|
||||
|
||||
ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
|
||||
if (ret) {
|
||||
hid_err(hdev, "hw start failed\n");
|
||||
|
@ -68,21 +68,13 @@ static int zpff_init(struct hid_device *hid)
|
||||
struct hid_report *report;
|
||||
struct hid_input *hidinput = list_entry(hid->inputs.next,
|
||||
struct hid_input, list);
|
||||
struct list_head *report_list =
|
||||
&hid->report_enum[HID_OUTPUT_REPORT].report_list;
|
||||
struct input_dev *dev = hidinput->input;
|
||||
int error;
|
||||
int i, error;
|
||||
|
||||
if (list_empty(report_list)) {
|
||||
hid_err(hid, "no output report found\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
report = list_entry(report_list->next, struct hid_report, list);
|
||||
|
||||
if (report->maxfield < 4) {
|
||||
hid_err(hid, "not enough fields in report\n");
|
||||
return -ENODEV;
|
||||
for (i = 0; i < 4; i++) {
|
||||
report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, i, 1);
|
||||
if (!report)
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
zpff = kzalloc(sizeof(struct zpff_device), GFP_KERNEL);
|
||||
|
@ -756,6 +756,10 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
|
||||
struct hid_device *hid_allocate_device(void);
|
||||
struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id);
|
||||
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
|
||||
struct hid_report *hid_validate_values(struct hid_device *hid,
|
||||
unsigned int type, unsigned int id,
|
||||
unsigned int field_index,
|
||||
unsigned int report_counts);
|
||||
int hid_open_report(struct hid_device *device);
|
||||
int hid_check_keys_pressed(struct hid_device *hid);
|
||||
int hid_connect(struct hid_device *hid, unsigned int connect_mask);
|
||||
|
Loading…
Reference in New Issue
Block a user