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bluez.25505
0003-btmon-fix-segfault-caused-by-buffer-over-r...
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File 0003-btmon-fix-segfault-caused-by-buffer-over-read.patch of Package bluez.25505
From 5ceef2cbde0b4407e61dc2370780bda895c8019c Mon Sep 17 00:00:00 2001 From: Matias Karhumaa <matias.karhumaa@gmail.com> Date: Tue, 16 Oct 2018 23:20:40 +0300 Subject: [PATCH 03/13] btmon: fix segfault caused by buffer over-read Fix segfault caused by buffer over-read in packet_hci_scodata function of monitor/packet.c. Fix is to check that index is not bigger than MAX_INDEX. This bug was found by fuzzing with AFL. --- monitor/packet.c | 5 +++++ 1 file changed, 5 insertions(+) Index: bluez-5.48/monitor/packet.c =================================================================== --- bluez-5.48.orig/monitor/packet.c +++ bluez-5.48/monitor/packet.c @@ -10283,6 +10283,11 @@ void packet_hci_scodata(struct timeval * uint8_t flags = acl_flags(handle); char handle_str[16], extra_str[32]; + if (index > MAX_INDEX) { + print_field("Invalid index (%d).", index); + return; + } + index_list[index].frame++; if (size < HCI_SCO_HDR_SIZE) {
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