On Wed, 2019-09-04 at 04:55:28 UTC, gromero wrote: > From: Gustavo Romero <[email protected]> > > When in userspace and MSR FP=0 the hardware FP state is unrelated to > the current process. This is extended for transactions where if tbegin > is run with FP=0, the hardware checkpoint FP state will also be > unrelated to the current process. Due to this, we need to ensure this > hardware checkpoint is updated with the correct state before we enable > FP for this process. ... > > This fixes CVE-2019-15031. > > Fixes: a7771176b439 ("powerpc: Don't enable FP/Altivec if not checkpointed") > Cc: [email protected] # 4.15+ > Signed-off-by: Gustavo Romero <[email protected]> > Signed-off-by: Michael Neuling <[email protected]>
Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/a8318c13e79badb92bc6640704a64cc022a6eb97 cheers
