On Thu, 2020-05-07 at 09:52 -0700, Dave Hansen wrote: > On 5/7/20 9:49 AM, Yu-cheng Yu wrote: > > In a core dump, copy_xstate_to_kernel() copies only enabled user xfeatures > > to a kernel buffer without touching areas for disabled xfeatures. However, > > those uninitialized areas may contain random data, which is then written to > > the core dump file and can be read by a non-privileged user. > > > > Fix it by clearing uninitialized areas. > > Do you have a Fixes: tag for this, or some background on where this > issue originated that might be helpful for backports? I will add that.
