CVE-2020-1711
QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · January 23, 2020
Updated · June 28, 2026
Description
An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.
Statement
This issue affects the versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 8, Red Hat OpenStack, Red Hat Virtualization and Red Hat Enterprise Linux Advanced Virtualization 8.
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 · 6CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CWE-122 · Heap-based Buffer Overflow