From: Oleg Nesterov <oleg@redhat.com>
To: Richard Guy Briggs <rgb@redhat.com>
Cc: security@kernel.org, Pengfei Wang <wpengfeinudt@gmail.com>,
"Krinke, Jens" <j.krinke@ucl.ac.uk>,
linux-audit@redhat.com
Subject: Re: Report Double Fetch Bug Found in Linux-4.6.1/kernel/auditsc.c
Date: Mon, 20 Jun 2016 21:18:14 +0200 [thread overview]
Message-ID: <20160620191814.GA2942@redhat.com> (raw)
In-Reply-To: <20160620182215.GC25615@madcap2.tricolour.ca>
Not that I understand this report, but
On 06/20, Richard Guy Briggs wrote:
>
> This function is only ever called by __audit_free(), which is only ever
> called on failure of task creation or on exit of the task, so in neither
> case can anything else change it.
How so?
Another thread or CLONE_VM task or /proc/pid/mem can change the user-space
memory in parallel.
Oleg.
next prev parent reply other threads:[~2016-06-20 19:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-20 13:50 Report Double Fetch Bug Found in Linux-4.6.1/kernel/auditsc.c Pengfei Wang
2016-06-20 18:22 ` Richard Guy Briggs
2016-06-20 19:18 ` Oleg Nesterov [this message]
2016-06-21 9:37 ` Pengfei Wang
2016-06-21 9:51 ` Ben Hutchings
2016-06-21 18:14 ` Richard Guy Briggs
2016-06-21 18:20 ` Ben Hutchings
2016-06-21 19:18 ` Richard Guy Briggs
2016-06-21 19:59 ` Ben Hutchings
2016-06-21 20:31 ` Andy Lutomirski
2016-06-21 20:47 ` Richard Guy Briggs
2016-06-22 9:57 ` Pengfei Wang
2016-06-27 21:45 ` Paul Moore
2016-06-21 18:17 ` Richard Guy Briggs
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