dtrace — security advisory

{
  "id": "8c8fc904b533afa008e50794fc6b2d7fc263bfd3779a4629cf15c2e1525fa23f",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-35233",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-35233",
    "summary": "An unprivileged attacker can craft a user-space process with a malicious ELF binary containing an out-of-range sh_link field. When root-level dtrace attaches to -- or instruments -- that process (via dtrace -p , pid probes, or USDT), the ELF parser reads heap memory beyond the allocated section cache array without any bounds check. This results in an uninitialized/out-of-bounds heap read that can cause a NULL pointer dereference crash of the dtrace process (DoS), or -- depending on heap layout -- a read-then-use of a garbage pointer controlled by adjacent allocations, providing a foothold toward further exploitation in a privileged context.",
    "evidence": "osv:DEBIAN-CVE-2026-35233",
    "products": [
      {
        "name": {
          "value": "dtrace",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.0.7-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2.0.5-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.0.6-1",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-35233",
      "aliases": [
        "DEBIAN-CVE-2026-35233"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.0.7-1"
                }
              ]
            }
          ],
          "package": {
            "name": "dtrace",
            "purl": "pkg:deb/debian/dtrace?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2.0.5-1",
            "2.0.6-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-35233.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:38.188039992Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-35233"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-35233"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-35233",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461151,
  "published_at": "2026-05-01T18:16:14.647+00:00"
}