linux-kernel - [media] st-hva: potential null pointer dereference in hva_hw_its_irq

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Message-Id: <688931600414652@mail.yandex.ru>
Date:   Fri, 18 Sep 2020 10:40:02 +0300
From:   Evgeny Novikov <novikov@...ras.ru>
To:     Jean-Christophe Trotin <jean-christophe.trotin@...com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media <linux-media@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        ldv-project-org <ldv-project@...uxtesting.org>
Subject: [media] st-hva: potential null pointer dereference in hva_hw_its_irq_thread()

If ctx_id >= HVA_MAX_INSTANCES in hva_hw_its_irq_thread(), it dereferences
ctx that is initialized to NULL.

I can not provide the patch since I do not know the logic of the driver
and I have not a capability to test it.

Found by Linux Driver Verification project (linuxtesting.org).

-- 
Best regards,
Evgeny Novikov