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Security advisory

Type: advisorySources: OSVCVE: CVE-2020-35448

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2020-35448
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 05:35 UTC · Revision 1

Source evidence

CVE-2020-35448

core-osv · Original source

Published 27 Dec 2020, 04:15 UTC

An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.

osv:CVE-2020-35448
Complete source record
{
  "id": "c4ba4fa3447691a920d67deae1b2f1ddb0e85499fe62dbecd0ff86778d64fc12",
  "url": "https://osv.dev/vulnerability/CVE-2020-35448",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-35448",
    "summary": "An issue was discovered in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.35.1. A heap-based buffer over-read can occur in bfd_getl_signed_32 in libbfd.c because sh_entsize is not validated in _bfd_elf_slurp_secondary_reloc_section in elf.c.",
    "evidence": "osv:CVE-2020-35448",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2020-35448",
      "aliases": [
        "CVE-2020-35448"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://sourceware.org/git/binutils-gdb.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7e46a74aa3713c563940960e361e08defda019c2"
                },
                {
                  "last_affected": "7e46a74aa3713c563940960e361e08defda019c2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:binutils:2.35.1:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.35.1"
                      },
                      {
                        "last_affected": "2.35.1"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.35.1",
            "binutils-2_35_1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-35448.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:30.882838523Z",
      "provider": "osv",
      "references": [
        "https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git%3Bh=8642dafaef21aa6747cec01df1977e9c52eb4679",
        "https://security.gentoo.org/glsa/202107-24",
        "https://security.netapp.com/advisory/ntap-20210129-0008/",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=26574"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-35448",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432679,
  "published_at": "2020-12-27T04:15:12.84+00:00"
}