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Fix Linux allocation hook calloc overflow handling #3635

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Fix Linux allocation hook calloc overflow handling #3635

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12 changes: 10 additions & 2 deletions ...mework/template/HookedFunctionsDoHook/Sources/HookedFunctions/src/hooked-functions-unix.c
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Original file line number Diff line number Diff line change
Expand Up @@ -19,6 +19,7 @@
#include <fcntl.h>
#include <inttypes.h>
#include <stdatomic.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
Expand Down Expand Up @@ -199,8 +200,15 @@ void *replacement_realloc(void *ptr, size_t size) {
}

void *replacement_calloc(size_t count, size_t size) {
void *ptr = replacement_malloc(count * size);
memset(ptr, 0, count * size);
if (size != 0 && count > SIZE_MAX / size) {
return NULL;
}

size_t total_size = count * size;
void *ptr = replacement_malloc(total_size);
if (ptr) {
memset(ptr, 0, total_size);
}
return ptr;
}

Expand Down