UNKNOWN READ in eval_expr

{
  "id": "589189be88f618775a7c791deb790415f67c406f7e0317afe6c2c0ebaa6f6df5",
  "url": "https://osv.dev/vulnerability/OSV-2020-1540",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UNKNOWN READ in eval_expr",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23781 ``` Crash type: UNKNOWN READ Crash state: eval_expr eval_binary eval_expr ```",
    "evidence": "osv:OSV-2020-1540",
    "products": [
      {
        "name": {
          "value": "augeas",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "release-1.13.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "release-1.14.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "release-1.14.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "release-1.15.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2020-1540",
      "aliases": [
        "OSV-2020-1540"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/hercules-team/augeas",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9c52a0b258f77394c9ade6c032e00b49bd01f949"
                }
              ]
            }
          ],
          "package": {
            "name": "augeas",
            "purl": "pkg:generic/augeas",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "release-1.13.0",
            "release-1.14.0",
            "release-1.14.1",
            "release-1.15.0"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/augeas/OSV-2020-1540.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-19T14:16:56.388269Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23781"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 374772,
  "published_at": "2020-07-29T00:00:39.727472+00:00"
}