Add checked shift and allocation size validation in COVER_map_init()#4627
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nidu-ninja wants to merge 1 commit intofacebook:devfrom
Open
Add checked shift and allocation size validation in COVER_map_init()#4627nidu-ninja wants to merge 1 commit intofacebook:devfrom
nidu-ninja wants to merge 1 commit intofacebook:devfrom
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This PR hardens COVER_map_init() in cover.c by adding validation for
bit shifts and allocation size computations.
The original implementation computed map size using a left shift and
performed a multiplication before malloc without validating whether
these operations could overflow.