From: Mark Wielaard <mark@klomp.org>
To: Ulf Hermann <ulf.hermann@qt.io>
Cc: elfutils-devel@sourceware.org
Subject: Re: [PATCH] Protect against integer overflow on shnum
Date: Thu, 27 Apr 2017 18:24:00 -0000 [thread overview]
Message-ID: <20170427175134.GA2061@stream> (raw)
In-Reply-To: <1c93e96d-a9ad-0c96-abc8-9661dad40b6c@qt.io>
On Thu, Apr 20, 2017 at 04:04:54PM +0200, Ulf Hermann wrote:
> If shnum is 0, the many "shnum - 1" would result in an overflow. Check it
> for 0, and only subtract once, rather than on every usage.
Since in both cases this is for the prelink undo section which skips
the zero header this is a more natural way to express shnum.
Applied to master.
Thanks,
Mark
prev parent reply other threads:[~2017-04-27 17:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-20 14:05 Ulf Hermann
2017-04-27 18:24 ` Mark Wielaard [this message]
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