Messages in this thread | | | From | Paul Moore <> | Date | Mon, 26 Sep 2022 18:41:21 -0400 | Subject | Re: [PATCH v2 2/2] powerpc/rtas: block error injection when locked down |
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On Mon, Sep 26, 2022 at 9:18 AM Nathan Lynch <nathanl@linux.ibm.com> wrote: > > The error injection facility on pseries VMs allows corruption of > arbitrary guest memory, potentially enabling a sufficiently privileged > user to disable lockdown or perform other modifications of the running > kernel via the rtas syscall. > > Block the PAPR error injection facility from being opened or called > when locked down. > > Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> > --- > arch/powerpc/kernel/rtas.c | 25 ++++++++++++++++++++++++- > include/linux/security.h | 1 + > security/security.c | 1 + > 3 files changed, 26 insertions(+), 1 deletion(-)
The lockdown changes are trivial, but they look fine to me.
Acked-by: Paul Moore <paul@paul-moore.com> (LSM)
-- paul-moore.com
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