virt/coco/sev-guest: Double-buffer messages

{
  "id": "100dbae2909180f07fcd48c9fa6729a3d7d56ecaf7424a31c2d7199518c63790",
  "url": "https://osv.dev/vulnerability/CVE-2023-53769",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "virt/coco/sev-guest: Double-buffer messages",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.",
    "evidence": "osv:CVE-2023-53769",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.28",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.2.15",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.3.2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-53769",
      "aliases": [
        "CVE-2023-53769"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d5af44dde5461d125d1602ac913ab5c6bdf09b8b"
                },
                {
                  "fixed": "577a64725bfd77645986168e953d405067ee565b"
                },
                {
                  "fixed": "c27dafc4aa50a29ec927b3aa84ac7b430071f682"
                },
                {
                  "fixed": "4b69c63f716cfda38e1210e65b68f67f6cee2ddf"
                },
                {
                  "fixed": "965006103a14703cc42043bbf9b5e0cdf7a468ad"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53769.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "6.1.28"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.2.15"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.3.0"
                },
                {
                  "fixed": "6.3.2"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53769.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.587941138Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf",
        "https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b",
        "https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad",
        "https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53769.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53769",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53769.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53769",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492191,
  "published_at": "2025-12-08T01:19:32.417+00:00"
}