diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2021-05-03 15:29:12 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2021-05-04 08:38:34 +0200 |
| commit | 7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 (patch) | |
| tree | 802cba8cb772bfb78d805b6e0a46640f8eff882d /hw/usb | |
| parent | 3f67e2e7f135b8be4117f3c2960e78d894feaa03 (diff) | |
usb/redir: avoid dynamic stack allocation (CVE-2021-3527)
Use autofree heap allocation instead.
Fixes: 4f4321c11ff ("usb: use iovecs in USBPacket")
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210503132915.2335822-3-kraxel@redhat.com>
Diffstat (limited to 'hw/usb')
| -rw-r--r-- | hw/usb/redirect.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c index 17f06f3417..6a75b0dc4a 100644 --- a/hw/usb/redirect.c +++ b/hw/usb/redirect.c @@ -620,7 +620,7 @@ static void usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p, .endpoint = ep, .length = p->iov.size }; - uint8_t buf[p->iov.size]; + g_autofree uint8_t *buf = g_malloc(p->iov.size); /* No id, we look at the ep when receiving a status back */ usb_packet_copy(p, buf, p->iov.size); usbredirparser_send_iso_packet(dev->parser, 0, &iso_packet, @@ -818,7 +818,7 @@ static void usbredir_handle_bulk_data(USBRedirDevice *dev, USBPacket *p, usbredirparser_send_bulk_packet(dev->parser, p->id, &bulk_packet, NULL, 0); } else { - uint8_t buf[size]; + g_autofree uint8_t *buf = g_malloc(size); usb_packet_copy(p, buf, size); usbredir_log_data(dev, "bulk data out:", buf, size); usbredirparser_send_bulk_packet(dev->parser, p->id, @@ -923,7 +923,7 @@ static void usbredir_handle_interrupt_out_data(USBRedirDevice *dev, USBPacket *p, uint8_t ep) { struct usb_redir_interrupt_packet_header interrupt_packet; - uint8_t buf[p->iov.size]; + g_autofree uint8_t *buf = g_malloc(p->iov.size); DPRINTF("interrupt-out ep %02X len %zd id %"PRIu64"\n", ep, p->iov.size, p->id); |