lkml.org 
[lkml]   [2020]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v3] mm: Add kvfree_sensitive() for freeing sensitive data objects
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

\
 
 \ /
  Last update: 2020-04-07 22:10    [W:0.192 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site