From: Luis Chamberlain <mcgrof@kernel.org>
To: Sergey Shtylyov <s.shtylyov@omp.ru>
Cc: Russ Weight <russ.weight@linux.dev>,
Danilo Krummrich <dakr@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] firmware_loader: prevent integer overflow in firmware_loading_timeout()
Date: Fri, 4 Jul 2025 18:39:35 -0700 [thread overview]
Message-ID: <aGiCV5Vgz00ODrw4@bombadil.infradead.org> (raw)
In-Reply-To: <62c63afc-5d56-46fc-aac4-87081498602d@omp.ru>
On Thu, Jul 03, 2025 at 11:38:33PM +0300, Sergey Shtylyov wrote:
> In firmware_loading_timeout(), *int* result of __firmware_loading_timeout()
> multiplied by HZ might overflow before being implicitly cast to *long* when
> being returned. Rewrite the function using check_mul_overflow() and capping
> the result at LONG_MAX on actual overflow...
>
> Found by Linux Verification Center (linuxtesting.org) with the Svace static
> analysis tool.
>
> Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
> Cc: stable@vger.kernel.org
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Luis
next prev parent reply other threads:[~2025-07-05 1:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-03 20:38 [PATCH] firmware_loader: prevent integer overflow in firmware_loading_timeout() Sergey Shtylyov
2025-07-05 1:39 ` Luis Chamberlain [this message]
2025-07-25 19:50 ` Sergey Shtylyov
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