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Mon, 10 Jun 2024 15:05:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1718031930; bh=PRI2/sxd7x105e7MpoFMNSh1rzZR05emTtKTaH754M4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=YiwW67LcvkEC2kG3TCiILiddgeQIYKJ16DEFFumkzjWDndSGVrTM0jJFIp8stCGhB SdyZLdJ//SpPoPnkNCmF89VgANPHcW6kQrfOv5BVs8ZwB/Gaf2fibBHWdW0vOe3bDA sh/TvjkI4nH87d48sRIZjnnFcFe1C1CemJ/bAzCg= Date: Mon, 10 Jun 2024 17:05:26 +0200 From: Greg KH To: =?utf-8?B?77+977+977+977+977+977+977+977+9IC8g77+90Lvvv70gLyDvv73vv70=?= =?utf-8?B?77+94qGk77+977+977+977+977+977+977+90Lrvv70=?= Cc: "akpm@linux-foundation.org" , "security@kernel.org" , "linux-mm@kvack.org" Subject: Re: [Linux bug report] A bug breaking device drivers' fault isolation guarantees Message-ID: <2024061055-shone-clean-3d0d@gregkh> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: AC9561C0008 X-Rspam-User: X-Stat-Signature: 4sfzn3cj98bxjseukhzrgaoc36946qb5 X-HE-Tag: 1718031931-764119 X-HE-Meta: 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 WOZ/wDyA xaIi+b2/GhxTpAMyDmzbcq4qjOaFXyM7B7saZf8aAaRBz2aDoV+kMnHiYkoc6aByPrXvZBY8y8UvmJRnwgqK8UXhlJgGzOPbYl8SbMnEv01dEAKv8kKW69bu7K4UDZlRfWBHJY7KAtYYUZaJu3dfJYFIxXCBcBFGVhYcO0vlA5lwN3A48zrJex6cxt1+kOEhA6VoZq/Jz07CPycJo4pX/qVrLEcjY6O2SwSCJ1/Zq0SfMst9FXCWB8JVS49wx5xFvKSs4k6/In5kUPBYIRPJHQMOZwMABq4ipyiU87DgWJojaQByS3kILL8XNyQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Jun 10, 2024 at 02:58:16PM +0000, �������� / �л� / ���⡤�������к� wrote: > Hi, > I'm Sihyun Roh, a security researcher at Compsec Lab, Seoul National University. > While testing NVIDIA GPU code, I discovered a minor mistake in the Linux kernel code. This issue can cause one process's fault to affect other processes, compromising the fault isolation guarantee. Given the potential security implications, I am forwarding this to the security team as well. > If you have any questions, feel free to ask. > Thank you for your efforts in maintaining the Linux kernel code. > Sincerely, > Sihyun For obvious reasons we can't open unsolicited .pdf files. Can you send this in text format? And if this is for an out-of-tree kernel driver, there's nothing we can do about that :( thanks, greg k-h