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(parent: 1493baa) | patch
i2c: dev: copy userspace array safely
authorPhilipp Stanner <pstanner@redhat.com>
Thu, 2 Nov 2023 19:26:13 +0000 (20:26 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 28 Nov 2023 17:14:51 +0000 (17:14 +0000)
commitfe4eb2157d8c45b127bd88b1376c38c27b741293
tree47844bec23d9dd85d7cba6c5a53c3415e3e72806tree | snapshot
parent1493baaf09e3c1899959c8a107cd1207e16d1788commit | diff
i2c: dev: copy userspace array safely

[ Upstream commit cc9c54232f04aef3a5d7f64a0ece7df00f1aaa3d ]

i2c-dev.c utilizes memdup_user() to copy a userspace array. This is done
without an overflow check.

Use the new wrapper memdup_array_user() to copy the array more safely.

Suggested-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/i2c/i2c-dev.c diff | blob | history
Linux kernels and configurations used by Zygo.