From: Kent Overstreet <kent.overstreet@linux.dev>
To: Kees Cook <keescook@chromium.org>
Cc: Suren Baghdasaryan <surenb@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: Re: [PATCH] alloc_tag: Tighten file permissions on /proc/allocinfo
Date: Thu, 25 Apr 2024 16:45:51 -0400 [thread overview]
Message-ID: <w6nbxvxt3itugrvtcvnayj5ducoxifwbffd7qh6vcastw77mse@2ugphwusgttz> (raw)
In-Reply-To: <20240425200844.work.184-kees@kernel.org>
On Thu, Apr 25, 2024 at 01:08:50PM -0700, Kees Cook wrote:
> The /proc/allocinfo file exposes a tremendous about of information about
> kernel build details, memory allocations (obviously), and potentially
> even image layout (due to ordering). As this is intended to be consumed
> by system owners (like /proc/slabinfo), use the same file permissions as
> there: 0400.
Err...
The side effect of locking down more and more reporting interfaces is
that programs that consume those interfaces now have to run as root.
That's not what we want.
next prev parent reply other threads:[~2024-04-25 20:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-25 20:08 Kees Cook
2024-04-25 20:45 ` Kent Overstreet [this message]
2024-04-25 20:51 ` Matthew Wilcox
2024-04-25 21:04 ` Kent Overstreet
2024-04-25 21:21 ` Suren Baghdasaryan
2024-04-25 21:25 ` Kent Overstreet
2024-04-25 21:38 ` Andrew Morton
2024-04-25 21:45 ` Kent Overstreet
2024-04-26 8:32 ` Pavel Machek
2024-04-26 8:46 ` Kent Overstreet
2024-04-25 22:42 ` Kees Cook
2024-04-25 23:02 ` Kent Overstreet
2024-04-25 23:47 ` Andrew Morton
2024-04-26 0:27 ` Kent Overstreet
2024-04-26 0:43 ` Kees Cook
2024-04-26 0:58 ` Kent Overstreet
2024-04-26 3:25 ` Matthew Wilcox
2024-04-26 3:35 ` Kent Overstreet
2024-04-26 8:34 ` Pavel Machek
2024-04-26 0:39 ` Kees Cook
2024-04-25 20:57 ` Kees Cook
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