CVE-2021-3929

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-3929
A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host.

8.2 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.5 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2021-3929 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2020298 Issue Tracking Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/556 Issue Tracking Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/782 Exploit Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/
https://access.redhat.com/security/cve/CVE-2021-3929 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2020298 Issue Tracking Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 Patch Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/556 Issue Tracking Third Party Advisory
https://gitlab.com/qemu-project/qemu/-/issues/782 Exploit Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/
https://security.netapp.com/advisory/ntap-20250228-0010/
Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
History

28 Feb 2025, 13:15

Type Values Removed Values Added
References
  • () https://security.netapp.com/advisory/ntap-20250228-0010/ -

21 Nov 2024, 06:22

Type Values Removed Values Added
References () https://access.redhat.com/security/cve/CVE-2021-3929 - Third Party Advisory () https://access.redhat.com/security/cve/CVE-2021-3929 - Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2020298 - Issue Tracking, Patch, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=2020298 - Issue Tracking, Patch, Third Party Advisory
References () https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 - Patch, Third Party Advisory () https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 - Patch, Third Party Advisory
References () https://gitlab.com/qemu-project/qemu/-/issues/556 - Issue Tracking, Third Party Advisory () https://gitlab.com/qemu-project/qemu/-/issues/556 - Issue Tracking, Third Party Advisory
References () https://gitlab.com/qemu-project/qemu/-/issues/782 - Exploit, Issue Tracking, Patch, Third Party Advisory () https://gitlab.com/qemu-project/qemu/-/issues/782 - Exploit, Issue Tracking, Patch, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/ -

31 Aug 2022, 17:33

Type Values Removed Values Added
CWE CWE-416
CPE cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
cpe:2.3:a:qemu:qemu:7.0.0:-:*:*:*:*:*:*
References (MISC) https://access.redhat.com/security/cve/CVE-2021-3929 - (MISC) https://access.redhat.com/security/cve/CVE-2021-3929 - Third Party Advisory
References (MISC) https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 - (MISC) https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 - Patch, Third Party Advisory
References (MISC) https://gitlab.com/qemu-project/qemu/-/issues/782 - (MISC) https://gitlab.com/qemu-project/qemu/-/issues/782 - Exploit, Issue Tracking, Patch, Third Party Advisory
References (MISC) https://gitlab.com/qemu-project/qemu/-/issues/556 - (MISC) https://gitlab.com/qemu-project/qemu/-/issues/556 - Issue Tracking, Third Party Advisory
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2020298 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2020298 - Issue Tracking, Patch, Third Party Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 8.2

25 Aug 2022, 20:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-08-25 20:15

Updated : 2025-02-28 13:15

NVD link : CVE-2021-3929

Mitre link : CVE-2021-3929

CVE.ORG link : CVE-2021-3929

JSON object : View

Products Affected

qemu

  • qemu

fedoraproject

  • fedora
CWE
CWE-416

Use After Free