netdev - Re: [PATCH] af_key: Fix heap information leak

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Date:   Tue, 7 Feb 2023 14:04:43 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Hyunwoo Kim <v4bel@...ori.io>
Cc:     steffen.klassert@...unet.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        imv4bel@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH] af_key: Fix heap information leak

On Sat, Feb 04, 2023 at 09:50:18AM -0800, Hyunwoo Kim wrote:
> Since x->calg etc. are allocated with kmalloc, information
> in kernel heap can be leaked using netlink socket on
> systems without CONFIG_INIT_ON_ALLOC_DEFAULT_ON.
> 
> Signed-off-by: Hyunwoo Kim <v4bel@...ori.io>
> ---
>  net/key/af_key.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Please explain exactly what is leaked and how.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt