From: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
To: Vikash Garodia <quic_vgarodia@quicinc.com>,
Dikshita Agarwal <quic_dikshita@quicinc.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Stanimir Varbanov <stanimir.varbanov@linaro.org>,
Hans Verkuil <hans.verkuil@cisco.com>
Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org,
Vedang Nagar <quic_vnagar@quicinc.com>
Subject: Re: [PATCH v3 1/2] media: venus: fix TOCTOU vulnerability when reading packets from shared memory
Date: Fri, 16 May 2025 11:11:36 +0100 [thread overview]
Message-ID: <c394186d-83ce-41f4-b564-e074e0dabb90@linaro.org> (raw)
In-Reply-To: <13887de6-4f84-9d0c-bd48-de6f0472d9ef@quicinc.com>
On 15/05/2025 19:25, Vikash Garodia wrote:
> Check the pseudo code which i proposed earlier in this conversation [1]. It does
> not rely on ptr_val at all to check the sanity after memcpy.
>
> [1]https://lore.kernel.org/all/0c50c24a-35fa-acfb-a807-
> b4ed5394506b@quicinc.com/
Understood.
Another version of this patch to check after the memcpy() for
verification purposes might be correct but, IMO there's no scope for a
TOCTOU based modification here.
---
bod
next prev parent reply other threads:[~2025-05-16 10:11 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-14 13:38 [PATCH v3 0/2] venus driver fixes for vulnerabilities due to unexpected firmware payload Dikshita Agarwal
2025-05-14 13:38 ` [PATCH v3 1/2] media: venus: fix TOCTOU vulnerability when reading packets from shared memory Dikshita Agarwal
2025-05-15 9:17 ` Bryan O'Donoghue
2025-05-15 9:56 ` Vikash Garodia
2025-05-15 10:28 ` Bryan O'Donoghue
2025-05-15 12:11 ` Vikash Garodia
2025-05-15 12:47 ` Bryan O'Donoghue
2025-05-15 13:23 ` Vikash Garodia
2025-05-15 17:51 ` Bryan O'Donoghue
2025-05-15 18:25 ` Vikash Garodia
2025-05-16 10:11 ` Bryan O'Donoghue [this message]
2025-05-14 13:38 ` [PATCH v3 2/2] media: venus: Fix OOB read due to missing payload bound check Dikshita Agarwal
2025-05-17 21:41 ` Bryan O'Donoghue
2025-05-18 3:56 ` Vikash Garodia
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