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.
References
Configurations
History
28 Feb 2025, 13:15
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21 Nov 2024, 06:22
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| References | () 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 | |
| References | () 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 | |
| References | () 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/ - |
07 Nov 2023, 03:38
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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