From: David Howells <dhowells@redhat.com>
To: Waiman Long <longman@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: dhowells@redhat.com, Johannes Weiner <hannes@cmpxchg.org>,
Herbert Xu <herbert@gondor.apana.org.au>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
keyrings@vger.kernel.org,
LSM List <linux-security-module@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [GIT PULL] keys: Fix key->sem vs mmap_sem issue when reading key
Date: Sun, 05 Apr 2020 09:03:50 +0000 [thread overview]
Message-ID: <3567369.1586077430@warthog.procyon.org.uk> (raw)
In-Reply-To: <78ff6e5d-9643-8798-09cb-65b1415140be@redhat.com>
Waiman Long <longman@redhat.com> wrote:
> > And yes, kzfree() isn't a good name either, and had that same
> > memset(), but at least it doesn't do the dual-underscore mistake.
> >
> > Including some kzfree()/crypto people explicitly - I hope we can get
> > away from this incorrect and actively wrong pattern of thinking that
> > "sensitive data should be memset(), and then we should add a random
> > 'z' in the name somewhere to 'document' that".
> >
> > Linus
> >
> Thanks for the suggestion, I will post a patch to rename the function to
> kvzfree_explicit() and use memzero_explicit() for clearing memory.
Should this be moved into core code, rather than being squirrelled away in
security/keys/?
David
next prev parent reply other threads:[~2020-04-05 9:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 12:16 [GIT PULL] keys: Fix key->sem vs mmap_sem issue when reading key David Howells
2020-04-04 20:00 ` Linus Torvalds
2020-04-05 3:10 ` Waiman Long
2020-04-05 9:03 ` David Howells [this message]
2020-04-05 17:31 ` Linus Torvalds
2020-04-06 2:38 ` Waiman Long
2020-04-04 20:05 ` pr-tracker-bot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3567369.1586077430@warthog.procyon.org.uk \
--to=dhowells@redhat.com \
--cc=hannes@cmpxchg.org \
--cc=herbert@gondor.apana.org.au \
--cc=jarkko.sakkinen@linux.intel.com \
--cc=keyrings@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=longman@redhat.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).