CVE-2020-29129 CVE-2020-29130 QEMU: slirp: out-of-bounds access while processing ARP/NCSI packets

[P J P <ppandit () redhat com>]

  Hello,

An out-of-bounds access issue was found in the SLiRP user networking 
implementation of QEMU. It could occur while processing ARP/NCSI packets, if 
the packet length was shorter than required to accommodate respective protocol 
headers and payload. A privileged guest user may use this flaw to potentially 
leak host information bytes.

Upstream patch:
---------------
  -> https://lists.freedesktop.org/archives/slirp/2020-November/000115.html

* This issue was reported by Qiuhao Li (cc'd).

* CVE-2020-29129 CVE-2020-29130 assigned via -> https://cveform.mitre.org/


Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
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