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
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/ |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2022-08-25T19:36:36
Updated: 2022-09-23T02:06:09
Reserved: 2021-11-05T00:00:00
Link: CVE-2021-3929
JSON object: View
NVD Information
Status : Modified
Published: 2022-08-25T20:15:09.417
Modified: 2023-11-07T03:38:25.290
Link: CVE-2021-3929
JSON object: View
Redhat Information
No data.
CWE