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Unrated severityNVD Advisory· Published Sep 17, 2025· Updated Jan 14, 2026

md/raid10: check slab-out-of-bounds in md_bitmap_get_counter

CVE-2023-53357

Description

In the Linux kernel, the following vulnerability has been resolved:

md/raid10: check slab-out-of-bounds in md_bitmap_get_counter

If we write a large number to md/bitmap_set_bits, md_bitmap_checkpage() will return -EINVAL because 'page >= bitmap->pages', but the return value was not checked immediately in md_bitmap_get_counter() in order to set *blocks value and slab-out-of-bounds occurs.

Move check of 'page >= bitmap->pages' to md_bitmap_get_counter() and return directly if true.

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119

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