interface_release_resource in hw/display/qxl.c in QEMU 3.1.x through 4.0.0 has a NULL pointer dereference.
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.html
http://www.openwall.com/lists/oss-security/2019/05/22/1
https://access.redhat.com/errata/RHBA-2019:3723
https://access.redhat.com/errata/RHSA-2019:2607
https://access.redhat.com/errata/RHSA-2019:2892
https://access.redhat.com/errata/RHSA-2019:3179
https://access.redhat.com/errata/RHSA-2019:3345
https://access.redhat.com/errata/RHSA-2019:3742
https://access.redhat.com/errata/RHSA-2019:3787
https://access.redhat.com/errata/RHSA-2019:4344
https://git.qemu.org/?p=qemu.git;a=commit;h=3be7eb2f47bf71db5f80fcf8750ea395dd5ffdd2
https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
https://lists.gnu.org/archive/html/qemu-devel/2019-05/msg01321.html
https://seclists.org/bugtraq/2019/May/76
https://usn.ubuntu.com/4191-1/
Source: MITRE
Published: 2019-05-24
Updated: 2020-12-30
Type: CWE-476
Base Score: 5
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Impact Score: 2.9
Exploitability Score: 10
Severity: MEDIUM
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 3.9
Severity: HIGH