Messages in this thread | | | From | Linus Torvalds <> | Date | Tue, 7 Apr 2020 13:09:11 -0700 | Subject | Re: [PATCH v3] mm: Add kvfree_sensitive() for freeing sensitive data objects |
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On Tue, Apr 7, 2020 at 1:03 PM Waiman Long <longman@redhat.com> wrote: > > For kvmalloc'ed data object that contains sensitive information like > cryptographic key, we need to make sure that the buffer is always > cleared before freeing it. Using memset() alone for buffer clearing may > not provide certainty as the compiler may compile it away. To be sure, > the special memzero_explicit() has to be used.
Ack. Since this isn't exactly high-priority, I'm assuming it will go through the usual channels (ie Andrew).
Linus
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