libzvbi through 0.2.45 Out-of-Bounds Write via Teletext DRCS convert_drcs

{
  "id": "90002372f10b3b10e6ae02662906425bf5280c3e9b1a1048a3df556726160fdd",
  "url": "https://osv.dev/vulnerability/CVE-2026-110654",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libzvbi through 0.2.45 Out-of-Bounds Write via Teletext DRCS convert_drcs",
    "summary": "libzvbi through 0.2.45 contains an out-of-bounds write vulnerability in the Teletext decoder that allows attackers to corrupt memory by supplying unvalidated DRCS pixel-mode values in X/28/3 packets. Attackers can send a crafted Teletext stream decoded via vbi_decode with every slot set to DRCS_MODE_6_5_4, causing convert_drcs to overflow chars[48][60] and crash the application.",
    "evidence": "osv:CVE-2026-110654",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-110654",
      "aliases": [
        "CVE-2026-110654"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zapping-vbi/zvbi",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d3a5ee9f2b047bf16cd1ee5ccf6ec05ee75409d0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.2.45"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.2.45"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.2.45",
            "v0.2.44",
            "v0.2.43",
            "v0.2.42",
            "v0.2.41",
            "v0.2.40",
            "v0.2.39",
            "v0.2.38",
            "v0.2.37",
            "v0.2.36"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110654.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.325103246Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110654.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-110654",
        "https://www.vulncheck.com/advisories/libzvbi-through-0.2.45-out-of-bounds-write-via-teletext-drcs-convert-drcs",
        "https://github.com/zapping-vbi/zvbi",
        "https://github.com/zapping-vbi/zvbi/blob/d3a5ee9f2b047bf16cd1ee5ccf6ec05ee75409d0/src/packet.c#L447",
        "https://hackmd.io/@haind-pwn/zvbi-teletext-drcs-mode-oob-write"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-787"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110654.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-110654",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516691,
  "published_at": "2026-10-14T15:01:21.898+00:00"
}