Commit 47ab1a2d authored by Jiri Kosina's avatar Jiri Kosina

Merge branch 'for-3.11/CVE-2013-2888' into for-3.12/upstream

This one didn't make it for 3.11 due to being applied too close
to release, queue it for 3.12 merge window.
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parents be67b68d 43622021
......@@ -63,6 +63,8 @@ struct hid_report *hid_register_report(struct hid_device *device, unsigned type,
struct hid_report_enum *report_enum = device->report_enum + type;
struct hid_report *report;
if (id >= HID_MAX_IDS)
return NULL;
if (report_enum->report_id_hash[id])
return report_enum->report_id_hash[id];
......@@ -404,8 +406,10 @@ static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
case HID_GLOBAL_ITEM_TAG_REPORT_ID:
parser->global.report_id = item_udata(item);
if (parser->global.report_id == 0) {
hid_err(parser->device, "report_id 0 is invalid\n");
if (parser->global.report_id == 0 ||
parser->global.report_id >= HID_MAX_IDS) {
hid_err(parser->device, "report_id %u is invalid\n",
parser->global.report_id);
return -1;
}
return 0;
......@@ -575,7 +579,7 @@ static void hid_close_report(struct hid_device *device)
for (i = 0; i < HID_REPORT_TYPES; i++) {
struct hid_report_enum *report_enum = device->report_enum + i;
for (j = 0; j < 256; j++) {
for (j = 0; j < HID_MAX_IDS; j++) {
struct hid_report *report = report_enum->report_id_hash[j];
if (report)
hid_free_report(report);
......
......@@ -393,10 +393,12 @@ struct hid_report {
struct hid_device *device; /* associated device */
};
#define HID_MAX_IDS 256
struct hid_report_enum {
unsigned numbered;
struct list_head report_list;
struct hid_report *report_id_hash[256];
struct hid_report *report_id_hash[HID_MAX_IDS];
};
#define HID_REPORT_TYPES 3
......
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