FKIE_CVE-2026-35233

Vulnerability from fkie_nvd - Published: 2026-05-01 18:16 - Updated: 2026-05-05 17:46
Severity
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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.
References
secalert_us@oracle.comhttps://linux.oracle.com/cve/CVE-2026-35233.htmlVendor Advisory
Impacted products
Vendor Product Version
oracle linux 8
oracle linux 9
oracle linux 10
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:oracle:linux:8:-:*:*:*:*:*:*",
              "matchCriteriaId": "CA9021D6-6027-42E9-A12D-7EA32C5C63F1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:oracle:linux:9:0:*:*:*:*:*:*",
              "matchCriteriaId": "C848CA1D-A42D-4AF1-9D95-E6268F9C1880",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:oracle:linux:10:0:*:*:*:*:*:*",
              "matchCriteriaId": "1F606DC6-31B5-4102-B174-D565662C4829",
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            }
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          "negate": false,
          "operator": "OR"
        }
      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "id": "CVE-2026-35233",
  "lastModified": "2026-05-05T17:46:30.743",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 2.5,
        "source": "secalert_us@oracle.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-05-01T18:16:14.647",
  "references": [
    {
      "source": "secalert_us@oracle.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://linux.oracle.com/cve/CVE-2026-35233.html"
    }
  ],
  "sourceIdentifier": "secalert_us@oracle.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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