From: Eric Biggers <ebiggers@kernel.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: linux-security-module@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: Reminder: 2 open syzbot bugs in "security/tomoyo" subsystem
Date: Tue, 23 Jul 2019 21:34:50 -0700 [thread overview]
Message-ID: <20190724043450.GZ643@sol.localdomain> (raw)
In-Reply-To: <7800c28f-bf1c-56cd-c82e-b1ff174ccbc8@i-love.sakura.ne.jp>
On Wed, Jul 24, 2019 at 12:18:47PM +0900, Tetsuo Handa wrote:
> > --------------------------------------------------------------------------------
> > Title: KASAN: invalid-free in tomoyo_realpath_from_path
> > Last occurred: 57 days ago
> > Reported: 56 days ago
> > Branches: net-next
> > Dashboard link: https://syzkaller.appspot.com/bug?id=e9e5a1d41c3fb5d0f79aeea0e4cd535f160a6702
> > Original thread: https://lkml.kernel.org/lkml/000000000000785e9d0589ec359a@google.com/T/#u
>
> This cannot be a TOMOYO's bug. We are waiting for a reproducer but
> no crash occurred since then. Maybe it is time to close as invalid.
Maybe. Did you check for stack buffer overflows in the functions that
tomoyo_realpath_from_path() calls? Perhaps something is corrupting the 'buf'
variable in the parent's stack frame.
- Eric
next prev parent reply other threads:[~2019-07-24 4:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-24 2:42 Reminder: 2 open syzbot bugs in "security/tomoyo" subsystem Eric Biggers
2019-07-24 3:18 ` Tetsuo Handa
2019-07-24 4:34 ` Eric Biggers [this message]
2019-07-24 4:54 ` Tetsuo Handa
2019-07-24 5:00 ` Eric Biggers
-- strict thread matches above, loose matches on Subject: below --
2019-07-02 5:14 Eric Biggers
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