Loading HuntDB...
Hunt
Vulnerability Intelligence by wss.sh
Home Daily Briefings High Impact CVEs Recent Exploits KEV Catalog GitHub Advisories Latest Updates Security News
Sign In Sign Up

CVE-2021-3929

UNKNOWN
Published 2022-08-25T19:36:36.000Z
Actions:

Expert Analysis

Professional remediation guidance

Get tailored security recommendations from our analyst team for CVE-2021-3929. We'll provide specific mitigation strategies based on your environment and risk profile.

No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-h66w-323g-4q62

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-3929
WEB https://access.redhat.com/security/cve/CVE-2021-3929
WEB https://bugzilla.redhat.com/show_bug.cgi?id=2020298
WEB https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385
WEB https://gitlab.com/qemu-project/qemu/-/issues/556
WEB https://gitlab.com/qemu-project/qemu/-/issues/782
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I
WEB https://security.netapp.com/advisory/ntap-20250228-0010

Advisory provided by GitHub Security Advisory Database. Published: August 26, 2022, Modified: February 28, 2025

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
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/
Published: 2022-08-25T19:36:36.000Z
Last Modified: 2025-02-28T13:07:25.655Z
Copied to clipboard!