CVE-2021-3929
- State
- Published
- Severity
- Not scored
- Published
- Aug 25, 2022
- Updated
- Feb 28, 2025
- Reserved
- Nov 5, 2021
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.
Scores
The record has no CVSS score.
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
QEMUn/a |
|
References
- https://gitlab.com/qemu-project/qemu/-/issues/556
- https://bugzilla.redhat.com/show_bug.cgi?id=2020298
- https://access.redhat.com/security/cve/CVE-2021-3929
- https://gitlab.com/qemu-project/qemu/-/issues/782
- https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385
- FEDORA-2022-f0a2695054vendor-advisory
- https://security.netapp.com/advisory/ntap-20250228-0010/
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