4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Greg Kroah-Hartman <gre...@linuxfoundation.org> commit 1ebb71143758f45dc0fa76e2f48429e13b16d110 upstream. Make sure we have enough of a report structure to validate before looking at it. Reported-by: Benoit Camredon <benoit.camre...@airbus.com> Tested-by: Benoit Camredon <benoit.camre...@airbus.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> Signed-off-by: Jiri Kosina <jkos...@suse.cz> --- drivers/hid/hid-cypress.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/hid/hid-cypress.c +++ b/drivers/hid/hid-cypress.c @@ -39,6 +39,9 @@ static __u8 *cp_report_fixup(struct hid_ if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX)) return rdesc; + if (*rsize < 4) + return rdesc; + for (i = 0; i < *rsize - 4; i++) if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) { rdesc[i] = 0x19;