lei lu 35652dfa8c fs/ntfs3: Validate ff offset
commit 50c47879650b4c97836a0086632b3a2e300b0f06 upstream.

This adds sanity checks for ff offset. There is a check
on rt->first_free at first, but walking through by ff
without any check. If the second ff is a large offset.
We may encounter an out-of-bound read.

Signed-off-by: lei lu <llfamsec@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-07-27 10:46:16 +02:00
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