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Date: Wed, 1 Mar 2023 19:02:10 +0300
From: Erg Noor <fuzzingrf@...dex.ru>
To: fulldisclosure@...lists.org
Subject: [FD] NetBSD overflow

Hi,

Trivial overflow in hfslib_reada_node_offset, while loop has no range 
checks.

|size_t hfslib_reada_node_offsets(void* in_bytes, uint16_t* 
out_offset_array) { void* ptr; if (in_bytes == NULL || out_offset_array 
== NULL) return 0; ptr = in_bytes; out_offset_array--; do { 
out_offset_array++; *out_offset_array = be16tohp(&ptr); } while 
(*out_offset_array != (uint16_t)14); return ((uint8_t*)ptr - 
(uint8_t*)in_bytes); }|

Repro is here https://github.com/fuzzingrf/netbsd_hfs

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