kernel: watch_queue: copy user-array safely

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Currently, there is no overflow-check with memdup_user().

Use the new function memdup_array_user() instead of memdup_user() for
duplicating the user-space array safely.

Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-5-pstanner@redhat.com

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Philipp Stanner 2023-09-20 14:36:11 +02:00 • committed by Dave Airlie

parent 569c8d82f9

commit ca0776571d

1 changed files with 1 additions and 1 deletions

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kernel/watch_queue.c

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