linux-kernel - media: ddbridge: potential buffer overflow in open

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Message-Id: <4321596552833@mail.yandex.ru>
Date:   Tue, 04 Aug 2020 18:01:44 +0300
From:   Evgeny Novikov <novikov@...ras.ru>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     linux-media@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        ldv-project-org <ldv-project@...uxtesting.org>
Subject: media: ddbridge: potential buffer overflow in open

ddb_open() accesses iminor(inode) of the ddbs array that has 64 elements
at most. There will be a buffer overflow if iminor(inode) is greater
than 63.

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