Re: [PATCH v2] crypto: scompress - fix req->dst buffer overflow

From: Herbert Xu
Date: Thu Dec 28 2023 - 22:30:56 EST


On Wed, Dec 27, 2023 at 09:35:23AM +0000, chengming.zhou@xxxxxxxxx wrote:
> From: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
>
> The req->dst buffer size should be checked before copying from the
> scomp_scratch->dst to avoid req->dst buffer overflow problem.
>
> Fixes: 1ab53a77b772 ("crypto: acomp - add driver-side scomp interface")
> Reported-by: syzbot+3eff5e51bf1db122a16e@xxxxxxxxxxxxxxxxxxxxxxxxx
> Closes: https://lore.kernel.org/all/0000000000000b05cd060d6b5511@xxxxxxxxxx/
> Signed-off-by: Chengming Zhou <zhouchengming@xxxxxxxxxxxxx>
> ---
> v2:
> - change error code to ENOSPC.
> ---
> crypto/scompress.c | 6 ++++++
> 1 file changed, 6 insertions(+)

Patch applied. Thanks.
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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