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Medium

libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table

Type: advisorySources: Official CVE List

libdwarf through 2.3.3 contains a heap out-of-bounds read vulnerability in dwarf_debug_addr_table() that omits the table starting offset when validating .debug_addr unit length. Attackers can supply a crafted object file with a non-zero offset table, causing dwarf_debug_addr_by_index() to read past the heap buffer, disclosing adjacent heap bytes or crashing consumers.

Products
libdwarf
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-116732
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:32 UTC · Revision 1

Source evidence

libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table

core-cve · Original source

Published 26 Oct 2026, 21:52 UTC

libdwarf through 2.3.3 contains a heap out-of-bounds read vulnerability in dwarf_debug_addr_table() that omits the table starting offset when validating .debug_addr unit length. Attackers can supply a crafted object file with a non-zero offset table, causing dwarf_debug_addr_by_index() to read past the heap buffer, disclosing adjacent heap bytes or crashing consumers.

cve:CVE-2026-116732

libdwarf

Fixed versions: Not specified

Complete source record
{
  "id": "bdad9d720dfa47ad3d4b581e89b65405f77ce9d0cc08ce0215e8eb022ae45355",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116732",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libdwarf through 2.3.3 Heap Out-of-Bounds Read via dwarf_debug_addr_table",
    "summary": "libdwarf through 2.3.3 contains a heap out-of-bounds read vulnerability in dwarf_debug_addr_table() that omits the table starting offset when validating .debug_addr unit length. Attackers can supply a crafted object file with a non-zero offset table, causing dwarf_debug_addr_by_index() to read past the heap buffer, disclosing adjacent heap bytes or crashing consumers.",
    "evidence": "cve:CVE-2026-116732",
    "products": [
      {
        "name": {
          "value": "libdwarf",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116732",
      "aliases": [
        "CVE-2026-116732"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 4.8,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N",
            "userInteraction": "PASSIVE",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "privilegesRequired": "NONE",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "LOW",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW"
          }
        },
        {
          "format": "CVSS",
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 4.4,
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L",
            "integrityImpact": "NONE",
            "userInteraction": "REQUIRED",
            "attackComplexity": "LOW",
            "availabilityImpact": "LOW",
            "privilegesRequired": "NONE",
            "confidentialityImpact": "LOW"
          }
        }
      ],
      "affected": [
        {
          "repo": "https://github.com/davea42/libdwarf-code",
          "vendor": "davea42",
          "product": "libdwarf",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "versionType": "custom",
              "lessThanOrEqual": "2.3.3"
            }
          ],
          "packageURL": "pkg:github/davea42/libdwarf-code",
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-26T21:52:33.622Z",
      "provider": "cve",
      "references": [
        "https://github.com/davea42/libdwarf-code/issues/336",
        "https://github.com/davea42/libdwarf-code",
        "https://github.com/davea42/libdwarf-code/commit/71f04013ddc2a3c88b9e25a4162ee2824741b593",
        "https://github.com/davea42/libdwarf-code/blob/v2.3.3/src/lib/libdwarf/dwarf_debugaddr.c#L175-L216",
        "https://hackmd.io/@haindpwn/libdwarf-debug-addr-table-section-offset-oob-read",
        "https://www.vulncheck.com/advisories/libdwarf-through-2.3.3-heap-out-of-bounds-read-via-dwarf-debug-addr-table"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
          "shortName": "VulnCheck",
          "dateUpdated": "2026-10-26T21:52:33.622Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116732",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 353933,
  "published_at": "2026-10-26T21:52:33.622+00:00"
}