On Sat, Dec 05, 2020 at 09:59:57AM +0100, Greg KH wrote: > On Sat, Dec 05, 2020 at 12:48:48AM +0000, Will McVicker wrote: > > The HID subsystem allows an "HID report field" to have a different > > number of "values" and "usages" when it is allocated. When a field > > struct is created, the size of the usage array is guaranteed to be at > > least as large as the values array, but it may be larger. This leads to > > a potential out-of-bounds write in > > __hidinput_change_resolution_multipliers() and an out-of-bounds read in > > hidinput_count_leds(). > > > > To fix this, let's make sure that both the usage and value arrays are > > the same size. > > > > Signed-off-by: Will McVicker <willmcvicker@xxxxxxxxxx> > > Any reason not to also add a cc: stable on this? No reason not to include stable. CC'd here. > > And, has this always been the case, or was this caused by some specific > commit in the past? If so, a "Fixes:" tag is always nice to included. I dug into the history and it's been like this for the past 10 years. So yeah pretty much always like this. > > And finally, as you have a fix for this already, no need to cc: > security@k.o as there's nothing the people there can do about it now :) Is that short for security@xxxxxxxxxx? If yes, then I did include them. If no, do you mind explaining? > > thanks, > > greg k-h
