CVE-2020-13253 QEMU: sd: OOB access could crash the guest resulting in DoS

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

  Hello,

An out-of-bounds read access issue was found in the SD Memory Card emulator of 
the QEMU. It occurs while performing block write commands via sdhci_write(), 
if a guest user has sent 'address' which is OOB of 's->wp_groups'. A guest 
user/process may use this flaw to crash the QEMU process resulting in DoS.

Upstream bug/thread:
  -> https://bugs.launchpad.net/qemu/+bug/1880822
  -> https://lists.gnu.org/archive/html/qemu-devel/2020-05/msg05877.html

This issue was reported by Alexander Bulekov(CC'd). 'CVE-2020-13253' requested 
via -> https://cveform.mitre.org/


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