cve-2021-3929
Vulnerability from cvelistv5
Published
2022-08-25 19:36
Modified
2024-08-03 17:09
Severity ?
EPSS score ?
Summary
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
| ▼ | URL | Tags | |
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2021-3929 | Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2020298 | Issue Tracking, Patch, Third Party Advisory | |
| secalert@redhat.com | https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385 | Patch, Third Party Advisory | |
| secalert@redhat.com | https://gitlab.com/qemu-project/qemu/-/issues/556 | Issue Tracking, Third Party Advisory | |
| secalert@redhat.com | https://gitlab.com/qemu-project/qemu/-/issues/782 | Exploit, Issue Tracking, Patch, Third Party Advisory | |
| secalert@redhat.com | https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/ |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.