{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.0.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "823a3f11fb8f04c3c3cc0f95f968fef1bfc6534f"
            }
          ],
          "repo": "https://github.com/qemu/qemu",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.0.0"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "823a3f11fb8f04c3c3cc0f95f968fef1bfc6534f"
            },
            {
              "fixed": "736b01642d85be832385"
            }
          ],
          "repo": "https://gitlab.com/qemu-project/qemu",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
          "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "35"
          },
          {
            "last_affected": "35"
          },
          {
            "introduced": "36"
          },
          {
            "last_affected": "36"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "fedoraproject:fedora"
      }
    ]
  },
  "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.",
  "id": "CVE-2021-3929",
  "modified": "2026-07-08T05:36:56.535003753Z",
  "published": "2022-08-25T20:15:09.417Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2021-3929"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.netapp.com/advisory/ntap-20250228-0010/"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.com/qemu-project/qemu/-/issues/556"
    },
    {
      "type": "FIX",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2020298"
    },
    {
      "type": "FIX",
      "url": "https://gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385"
    },
    {
      "type": "FIX",
      "url": "https://gitlab.com/qemu-project/qemu/-/issues/782"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}