CVEvulnerability
CVE-2021-3929
8.2 HIGH
Official page ↗
- Status
- Modified
- Published
- 2022-08-25
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.2 HIGH — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
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.
Affected configurations
• qemu qemu (< 7.0.0)
• fedoraproject fedora 35
• fedoraproject fedora 36
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- 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/ lists.fedoraproject.org
- 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/ lists.fedoraproject.org
- https://security.netapp.com/advisory/ntap-20250228-0010/ security.netapp.com