hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.
http://www.openwall.com/lists/oss-security/2020/06/01/6
http://www.openwall.com/lists/oss-security/2020/06/15/8
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
https://lists.gnu.org/archive/html/qemu-devel/2020-06/msg00004.html
https://security.gentoo.org/glsa/202011-09
https://security.netapp.com/advisory/ntap-20200608-0007/
Source: MITRE
Published: 2020-06-02
Updated: 2020-12-14
Type: CWE-119
Base Score: 4.6
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 6.7
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 0.8
Severity: MEDIUM