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From: Helge Deller <deller@gmx.de>
To: Sean Young <sean@mess.org>, parisc-linux@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] parisc: unwind: Replace open-coded binary search with bsearch()
Date: Tue, 15 Sep 2026 09:31:20 +0200	[thread overview]
Message-ID: <4da6291f-45ab-4651-a824-b5efb945e8f3@gmx.de> (raw)
In-Reply-To: <20260913141228.176399-1-sean@mess.org>

On 9/13/26 16:12, Sean Young wrote:
> There is a bug in the binary search where hi can underflow. If
> addr is less than the first entry, then "hi = mid - 1" will underflow
> to ULONG_MAX. Then we have an out-of-bounds read.
> 
> Replace the open-coded binary search with bsearch().
> 
> Issue found by an LLM.
> 
> Signed-off-by: Sean Young <sean@mess.org>
> ---
>   arch/parisc/kernel/unwind.c | 33 +++++++++++++++------------------
>   1 file changed, 15 insertions(+), 18 deletions(-)
Applied.

Thanks!
Helge

      reply	other threads:[~2026-09-15  7:31 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-13 14:12 Sean Young
2026-09-15  7:31 ` Helge Deller [this message]

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