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Adding qemu 5.1 for rpi3 emulation

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Gerardo J. Puerta Cardelles
2021-02-22 09:23:51 +01:00
parent 73dd5b7bae
commit f9ef2aa84c
20 changed files with 4002 additions and 0 deletions
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90
app-emulation/qemu/files/qemu-5.1.0-usb-oob-CVE-2020-14364.patch Normal file
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@ -0,0 +1,90 @@
https://bugs.gentoo.org/743649
From b946434f2659a182afc17e155be6791ebfb302eb Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 25 Aug 2020 07:36:36 +0200
Subject: [PATCH] usb: fix setup_len init (CVE-2020-14364)
Store calculated setup_len in a local variable, verify it, and only
write it to the struct (USBDevice->setup_len) in case it passed the
sanity checks.
This prevents other code (do_token_{in,out} functions specifically)
from working with invalid USBDevice->setup_len values and overrunning
the USBDevice->setup_buf[] buffer.
Fixes: CVE-2020-14364
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-id: 20200825053636.29648-1-kraxel@redhat.com
---
hw/usb/core.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/hw/usb/core.c b/hw/usb/core.c
index 5abd128b6b..5234dcc73f 100644
--- a/hw/usb/core.c
+++ b/hw/usb/core.c
@@ -129,6 +129,7 @@ void usb_wakeup(USBEndpoint *ep, unsigned int stream)
static void do_token_setup(USBDevice *s, USBPacket *p)
{
int request, value, index;
+ unsigned int setup_len;
if (p->iov.size != 8) {
p->status = USB_RET_STALL;
@@ -138,14 +139,15 @@ static void do_token_setup(USBDevice *s, USBPacket *p)
usb_packet_copy(p, s->setup_buf, p->iov.size);
s->setup_index = 0;
p->actual_length = 0;
- s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6];
- if (s->setup_len > sizeof(s->data_buf)) {
+ setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6];
+ if (setup_len > sizeof(s->data_buf)) {
fprintf(stderr,
"usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n",
- s->setup_len, sizeof(s->data_buf));
+ setup_len, sizeof(s->data_buf));
p->status = USB_RET_STALL;
return;
}
+ s->setup_len = setup_len;
request = (s->setup_buf[0] << 8) | s->setup_buf[1];
value = (s->setup_buf[3] << 8) | s->setup_buf[2];
@@ -259,26 +261,28 @@ static void do_token_out(USBDevice *s, USBPacket *p)
static void do_parameter(USBDevice *s, USBPacket *p)
{
int i, request, value, index;
+ unsigned int setup_len;
for (i = 0; i < 8; i++) {
s->setup_buf[i] = p->parameter >> (i*8);
}
s->setup_state = SETUP_STATE_PARAM;
- s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6];
s->setup_index = 0;
request = (s->setup_buf[0] << 8) | s->setup_buf[1];
value = (s->setup_buf[3] << 8) | s->setup_buf[2];
index = (s->setup_buf[5] << 8) | s->setup_buf[4];
- if (s->setup_len > sizeof(s->data_buf)) {
+ setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6];
+ if (setup_len > sizeof(s->data_buf)) {
fprintf(stderr,
"usb_generic_handle_packet: ctrl buffer too small (%d > %zu)\n",
- s->setup_len, sizeof(s->data_buf));
+ setup_len, sizeof(s->data_buf));
p->status = USB_RET_STALL;
return;
}
+ s->setup_len = setup_len;
if (p->pid == USB_TOKEN_OUT) {
usb_packet_copy(p, s->data_buf, s->setup_len);
--
2.28.0