Segv on unknown address in glslang::TPpContext::tokenPaste

{
  "id": "20f156bb83db0b58a1dd72c62dd676978941f5847a181f2c23bdba24929678be",
  "url": "https://osv.dev/vulnerability/OSV-2026-1069",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Segv on unknown address in glslang::TPpContext::tokenPaste",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=539180630 ``` Crash type: Segv on unknown address Crash state: glslang::TPpContext::tokenPaste glslang::TPpContext::tokenize glslang::TShader::preprocess ```",
    "evidence": "osv:OSV-2026-1069",
    "products": [
      {
        "name": {
          "value": "shaderc",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v2026.3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v2026.4",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-1069",
      "aliases": [
        "OSV-2026-1069"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/google/shaderc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "03dac0d0d1f70401b3bbc6219d3f71899ec92c77"
                },
                {
                  "fixed": "5bcaaaec711df4dfa31f38923d3d42b9b98d5250"
                }
              ]
            }
          ],
          "package": {
            "name": "shaderc",
            "purl": "pkg:generic/shaderc",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v2026.3",
            "v2026.4"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/shaderc/OSV-2026-1069.yaml"
          },
          "ecosystem_specific": {
            "severity": null
          }
        }
      ],
      "modified": "2026-10-23T12:15:03.197018609Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=539180630"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 412774,
  "published_at": "2026-07-28T07:16:02.263026+00:00"
}