Security advisory

{
  "id": "5d8eb79fabbccdf6dd55b8fc570349a79b72fc4c703b7dd69d029513cd4d9eee",
  "url": "https://osv.dev/vulnerability/CVE-2020-15859",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-15859",
    "summary": "QEMU 4.2.0 has a use-after-free in hw/net/e1000e_core.c because a guest OS user can trigger an e1000e packet with the data's address set to the e1000e's MMIO address.",
    "evidence": "osv:CVE-2020-15859",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2020-15859",
      "aliases": [
        "CVE-2020-15859"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/qemu/qemu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b0ca999a43a22b38158a222233d3f5881648bb4f"
                },
                {
                  "last_affected": "b0ca999a43a22b38158a222233d3f5881648bb4f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.0"
                      },
                      {
                        "last_affected": "4.2.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.0",
            "v4.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15859.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/qemu-project/qemu",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b0ca999a43a22b38158a222233d3f5881648bb4f"
                },
                {
                  "last_affected": "b0ca999a43a22b38158a222233d3f5881648bb4f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.2.0"
                      },
                      {
                        "last_affected": "4.2.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.2.0",
            "v4.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15859.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:31.248943229Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/02/msg00024.html",
        "https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html",
        "https://security.gentoo.org/glsa/202208-27",
        "https://bugs.launchpad.net/qemu/+bug/1886362",
        "https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg05304.html",
        "https://www.openwall.com/lists/oss-security/2020/07/21/3"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  },
                  {
                    "introduced": "10.0"
                  },
                  {
                    "last_affected": "10.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-15859",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432751,
  "published_at": "2020-07-21T16:15:11.957+00:00"
}