CVE-2021-3947
QEMU: NVMe: out-of-bounds memory read in nvme_changed_nslist
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 10, 2021
Updated · June 28, 2026
Description
A stack-buffer-overflow was found in QEMU in the NVME component. The flaw lies in nvme_changed_nslist() where a malicious guest controlling certain input can read out of bounds memory. A malicious user could use this flaw leading to disclosure of sensitive information.
Statement
The qemu-kvm packages as shipped with Red Hat Enterprise Linux are not affected by this flaw as they do not include support for NVMe emulation.
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:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CWE-125 · Out-of-bounds Read