xen/CVE-2015-7512-qemuu-net-pcnet-buffer-overflow-in-non-loopback-mode.patch
Charles Arnold 39134eb9d2 - bsc#962758 - VUL-0: CVE-2013-4539: xen: tsc210x: buffer overrun
on invalid state load
  CVE-2013-4539-qemut-tsc210x-fix-buffer-overrun-on-invalid-state-load.patch

- bsc#962632 - VUL-0: CVE-2015-1779: xen: vnc: insufficient
  resource limiting in VNC websockets decoder
  CVE-2015-1779-qemuu-limit-size-of-HTTP-headers-from-websockets-clients.patch
  CVE-2015-1779-qemuu-incrementally-decode-websocket-frames.patch
- bsc#962642 - VUL-0: CVE-2013-4537: xen: ssi-sd: buffer overrun on
  invalid state load
  CVE-2013-4537-qemut-ssi-sd-fix-buffer-overrun-on-invalid-state-load.patch
- bsc#962627 - VUL-0: CVE-2014-7815: xen: vnc: insufficient
  bits_per_pixel from the client sanitization
  CVE-2014-7815-qemut-vnc-sanitize-bits_per_pixel-from-the-client.patch

- bsc#962335 - VUL-0: CVE-2013-4538: xen: ssd0323: fix buffer
  overun on invalid state
  CVE-2013-4538-qemut-ssd0323-fix-buffer-overun-on-invalid-state.patch
- bsc#962360 - VUL-0: CVE-2015-7512: xen: net: pcnet: buffer
  overflow in non-loopback mode
  CVE-2015-7512-qemuu-net-pcnet-buffer-overflow-in-non-loopback-mode.patch
  CVE-2015-7512-qemut-net-pcnet-buffer-overflow-in-non-loopback-mode.patch

- bsc#961692 - VUL-0: CVE-2016-1714: xen: nvram: OOB r/w access in
  processing firmware configurations
  CVE-2016-1714-qemuu-fw_cfg-add-check-to-validate-current-entry-value.patch
  CVE-2016-1714-qemut-fw_cfg-add-check-to-validate-current-entry-value.patch

- bsc#961358 - VUL-0: CVE-2015-8613: xen: qemu: scsi: stack based
  buffer overflow in megasas_ctrl_get_info

OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=395
2016-01-20 16:26:32 +00:00

31 lines
1.0 KiB
Diff

References: bsc#962360 CVE-2015-7512
Backends could provide a packet whose length is greater than buffer
size. Check for this and truncate the packet to avoid rx buffer
overflow in this case.
Cc: Prasad J Pandit <address@hidden>
Cc: address@hidden
Signed-off-by: Jason Wang <address@hidden>
---
hw/net/pcnet.c | 6 ++++++
1 file changed, 6 insertions(+)
Index: xen-4.6.0-testing/tools/qemu-xen-dir-remote/hw/net/pcnet.c
===================================================================
--- xen-4.6.0-testing.orig/tools/qemu-xen-dir-remote/hw/net/pcnet.c
+++ xen-4.6.0-testing/tools/qemu-xen-dir-remote/hw/net/pcnet.c
@@ -1086,6 +1086,12 @@ ssize_t pcnet_receive(NetClientState *nc
int pktcount = 0;
if (!s->looptest) {
+ if (size > 4092) {
+#ifdef PCNET_DEBUG_RMD
+ fprintf(stderr, "pcnet: truncates rx packet.\n");
+#endif
+ size = 4092;
+ }
memcpy(src, buf, size);
/* no need to compute the CRC */
src[size] = 0;