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| author | Aaron Ma <aaron.ma@canonical.com> | 2018-01-08 05:41:41 +0300 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2018-02-16 15:30:56 +0300 |
| commit | 6de0b13cc0b4ba10e98a9263d7a83b940720b77a (patch) | |
| tree | df6ee2f81950bfddbf9b3719692a9fcfa2f82275 /drivers/hid | |
| parent | ac75a041048b8c1f7418e27621ca5efda8571043 (diff) | |
| download | linux-6de0b13cc0b4ba10e98a9263d7a83b940720b77a.tar.xz | |
HID: core: Fix size as type u32
When size is negative, calling memset will make segment fault.
Declare the size as type u32 to keep memset safe.
size in struct hid_report is unsigned, fix return type of
hid_report_len to u32.
Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
| -rw-r--r-- | drivers/hid/hid-core.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index c2560aae5542..4fc08c38bc0e 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1365,7 +1365,7 @@ u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags) * of implement() working on 8 byte chunks */ - int len = hid_report_len(report) + 7; + u32 len = hid_report_len(report) + 7; return kmalloc(len, flags); } @@ -1430,7 +1430,7 @@ void __hid_request(struct hid_device *hid, struct hid_report *report, { char *buf; int ret; - int len; + u32 len; buf = hid_alloc_report_buf(report, GFP_KERNEL); if (!buf) @@ -1456,14 +1456,14 @@ out: } EXPORT_SYMBOL_GPL(__hid_request); -int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, +int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, u32 size, int interrupt) { struct hid_report_enum *report_enum = hid->report_enum + type; struct hid_report *report; struct hid_driver *hdrv; unsigned int a; - int rsize, csize = size; + u32 rsize, csize = size; u8 *cdata = data; int ret = 0; @@ -1521,7 +1521,7 @@ EXPORT_SYMBOL_GPL(hid_report_raw_event); * * This is data entry for lower layers. */ -int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt) +int hid_input_report(struct hid_device *hid, int type, u8 *data, u32 size, int interrupt) { struct hid_report_enum *report_enum; struct hid_driver *hdrv; |