CVE-2020-13659
QEMU: exec: address_space_map returns NULL without setting length to zero may lead to DoS
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 14, 2020
Updated · June 28, 2026
Description
A NULL pointer dereference flaw was found in the MegaRAID SAS 8708EM2 emulator of the QEMU. This issue occurs because the address_space_map() API while mapping physical memory into the host's virtual address space, may return NULL without setting the length parameter to zero (0). This flaw allows a guest user or process to crash the QEMU process on the host resulting in a denial of service.
Statement
In Red Hat OpenStack Platform, because the flaw has a lower impact and the fix would require a substantial amount of development, no update will be provided at this time for the RHOSP qemu-kvm-rhev package.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 2.5CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:L
CWE-476 · NULL Pointer Dereference