From: Herbert Xu <herbert@gondor.apana.org.au>
To: "Jérémy Jean" <Jeremy.Jean@oss.cyber.gouv.fr>
Cc: Lukas Wunner <lukas@wunner.de>, Ignat Korchagin <ignat@linux.win>,
"David S. Miller" <davem@davemloft.net>,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/2] crypto: rsassa-pkcs1: fix undersized key handling
Date: Fri, 11 Sep 2026 15:28:06 +1000 [thread overview]
Message-ID: <aqORZi129t_AHaku@gondor.apana.org.au> (raw)
In-Reply-To: <20260826103744.1554131-1-Jeremy.Jean@oss.cyber.gouv.fr>
On Wed, Aug 26, 2026 at 10:37:42AM +0000, Jérémy Jean wrote:
> PKCS#1 v1.5 requires an encoded message of at least 11 bytes. The
> signing and verification functions do not reject smaller RSA modulus
> sizes reported by the child implementation.
>
> This series include two patches due to integer underflows:
> * one in the signing function that can write OOB,
> * one in the verification function that can read 1 byte OOB.
>
> Jérémy Jean (2):
> crypto: rsassa-pkcs1: reject undersized keys when signing
> crypto: rsassa-pkcs1: reject undersized keys when verifying
>
> crypto/rsassa-pkcs1.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> --
> 2.47.3
All applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
prev parent reply other threads:[~2026-09-11 5:28 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-26 10:37 [PATCH 0/2] crypto: rsassa-pkcs1: fix undersized key handling Jérémy Jean
2026-08-26 10:37 ` [PATCH 1/2] crypto: rsassa-pkcs1: reject undersized keys when signing Jérémy Jean
2026-08-26 15:44 ` Sudhakar Kuppusamy
2026-08-26 10:37 ` [PATCH 2/2] crypto: rsassa-pkcs1: reject undersized keys when verifying Jérémy Jean
2026-08-26 15:44 ` Sudhakar Kuppusamy
2026-09-11 5:28 ` Herbert Xu [this message]
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