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[Bug 1555353] Re: integer overflow in xt_alloc_table_info
Upstream proposed fix: http://marc.info/?l=netfilter-
** Information type changed from Private Security to Public Security
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integer overflow in xt_alloc_table_info
Status in linux package in Ubuntu:
A recent refactoring cof this codepath
introduced an integer overflow in xt_alloc_table_info, which on 32-bit
systems can lead to small structure allocation and a copy_from_user
based heap corruption.
More specifically, the overflow may have been introduced in
; specifically the bit:
+ size_t sz = sizeof(*info) + size;
(where size is an unsigned int passed from userspace).
This issue should only affect 32bit platforms (xt_table_info.size is
an unsigned int).
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