CVE-2026-110659 (GCVE-0-2026-110659)

Vulnerability from cvelistv5 – Published: 2026-10-14 15:01 – Updated: 2026-10-14 15:01
VLAI
Title
ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry
Summary
ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6432 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
serge1 ELFIO Affected: 0 , ≤ 3.12 (custom)
guessed Create a notification for this product.
Date Public
2026-10-14 00:00
Credits
HaiND from the Post and Telecommunication Institute of Technology
Show details on NVD website
To clipboard 

{
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        {
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          "defaultStatus": "unaffected",
          "product": "ELFIO",
          "repo": "https://github.com/serge1/ELFIO",
          "vendor": "serge1",
          "versions": [
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              "lessThanOrEqual": "3.12",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
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          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-14T00:00:00.000Z",
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        }
      ],
      "metrics": [
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            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
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          },
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T15:01:25.207Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "technical-description",
            "exploit"
          ],
          "url": "https://hackmd.io/@haind-pwn/elfio-relocation-get-entry-null-deref"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/serge1/ELFIO/blob/8ae6cec5d60495822ecd57d736f66149da9b1830/elfio/elfio_relocation.hpp#L142"
        },
        {
          "tags": [
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          "url": "https://github.com/serge1/ELFIO"
        },
        {
          "name": "VulnCheck Advisory: ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/elfio-through-3.12-null-pointer-dereference-via-relocation-section-accessor-get-entry"
        }
      ],
      "title": "ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-110659",
    "datePublished": "2026-10-14T15:01:25.207Z",
    "dateReserved": "2026-10-14T13:08:40.336Z",
    "dateUpdated": "2026-10-14T15:01:25.207Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-110659",
      "date": "2026-10-18",
      "epss": "0.00172",
      "percentile": "0.06152"
    },
    "microsoft_vex": {
      "current_release_date": "2026-10-17T01:07:00.000Z",
      "cve": "CVE-2026-110659",
      "id": "msrc_CVE-2026-110659",
      "initial_release_date": "2026-10-17T01:07:00.000Z",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ELFIO through 3.12 NULL Pointer Dereference via relocation_section_accessor get_entry",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-110659.json",
      "version": "1"
    },
    "nvd": {
      "cve": {
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            "affectedData": [
              {
                "collectionURL": "https://github.com/serge1/ELFIO",
                "defaultStatus": "unaffected",
                "product": "ELFIO",
                "repo": "https://github.com/serge1/ELFIO",
                "vendor": "serge1",
                "versions": [
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                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "disclosure@vulncheck.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "ELFIO through 3.12 contains a NULL pointer dereference vulnerability in relocation_section_accessor get_entry() that allows attackers to crash applications via an unvalidated sh_link index. Attackers can supply a crafted ELF file whose SHT_REL or SHT_RELA section has a dangling sh_link, causing find_hash_section() to dereference null and deny service."
          }
        ],
        "id": "CVE-2026-110659",
        "lastModified": "2026-10-16T19:18:44.867",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
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                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
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                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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              "type": "Primary"
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          ],
          "cvssMetricV40": [
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              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "LOCAL",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 6.8,
                "baseSeverity": "MEDIUM",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "HIGH",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "NONE",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "disclosure@vulncheck.com",
              "type": "Secondary"
            }
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        },
        "published": "2026-10-14T16:17:42.780",
        "references": [
          {
            "source": "disclosure@vulncheck.com",
            "url": "https://github.com/serge1/ELFIO"
          },
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            "source": "disclosure@vulncheck.com",
            "url": "https://github.com/serge1/ELFIO/blob/8ae6cec5d60495822ecd57d736f66149da9b1830/elfio/elfio_relocation.hpp#L142"
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            "source": "disclosure@vulncheck.com",
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            "source": "disclosure@vulncheck.com",
            "url": "https://www.vulncheck.com/advisories/elfio-through-3.12-null-pointer-dereference-via-relocation-section-accessor-get-entry"
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        "vulnStatus": "Deferred",
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                "value": "CWE-476"
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    "redhat_vex": {
      "current_release_date": "2026-10-15T18:46:06+00:00",
      "cve": "CVE-2026-110659",
      "id": "CVE-2026-110659",
      "initial_release_date": "2026-10-14T15:01:25.207000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "elfio: elfio: Denial of Service via invalid relocation section link",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-110659.json",
      "version": "3"
    }
  }
}



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