From: Herbert Xu <herbert@gondor.apana.org.au>
To: Ally Heev <allyheev@gmail.com>
Cc: David Howells <dhowells@redhat.com>,
Lukas Wunner <lukas@wunner.de>,
Ignat Korchagin <ignat@cloudflare.com>,
"David S. Miller" <davem@davemloft.net>,
keyrings@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-kernel@vger.kernel.org,
Dan Carpenter <dan.carpenter@linaro.org>
Subject: Re: [PATCH v2] crypto: asymmetric_keys: fix uninitialized pointers with free attribute
Date: Sat, 22 Nov 2025 11:18:06 +0800 [thread overview]
Message-ID: <aSErbjx5TrFH7K76@gondor.apana.org.au> (raw)
In-Reply-To: <20251111-aheev-uninitialized-free-attr-crypto-v2-1-33699a37a3ed@gmail.com>
On Tue, Nov 11, 2025 at 07:06:29PM +0530, Ally Heev wrote:
> Uninitialized pointers with `__free` attribute can cause undefined
> behavior as the memory assigned randomly to the pointer is freed
> automatically when the pointer goes out of scope.
>
> crypto/asymmetric_keys doesn't have any bugs related to this as of now,
> but, it is better to initialize and assign pointers with `__free`
> attribute in one statement to ensure proper scope-based cleanup
>
> Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
> Closes: https://lore.kernel.org/all/aPiG_F5EBQUjZqsl@stanley.mountain/
> Signed-off-by: Ally Heev <allyheev@gmail.com>
> ---
> Changes in v2:
> - moved declarations to the top and initialized them with NULL
> - Link to v1: https://lore.kernel.org/r/20251105-aheev-uninitialized-free-attr-crypto-v1-1-83da1e10e8c4@gmail.com
> ---
> crypto/asymmetric_keys/x509_cert_parser.c | 2 +-
> crypto/asymmetric_keys/x509_public_key.c | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
Patch 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
next prev parent reply other threads:[~2025-11-22 3:18 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-11 13:36 [PATCH v2] crypto: asymmetric_keys: fix uninitialized pointers with free attribute Ally Heev
2025-11-11 16:08 ` Ignat Korchagin
2025-11-22 3:18 ` Herbert Xu [this message]
2025-11-22 14:25 ` Krzysztof Kozlowski
2025-11-22 17:19 ` ally heev
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