thunderbird: Fix of 2 CVEs

{
  "id": "319f950b896748a0086f817fd54d3f174a185236343d3f19cdb234b1848c36c5",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1783075621",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "thunderbird: Fix of 2 CVEs",
    "summary": "- CVE-2026-12313: Linux sandbox broker SymlinkPath() accepted paths containing /.. components, allowing a compromised content process to traverse out of allowed directories; reject any path that contains /../, equals .., starts with ../, or ends with /.. (Bug 2040477) - CVE-2026-33636: bundled libpng 1.6.39 NEON palette expansion (arm/palette_neon_intrinsics.c) had an out-of-bounds read/write when row_width was not aligned to chunk size; backport upstream libpng commit aba9f18 that rewrites the loop guard and removes the unsafe post-loop adjustment (compiled but unreachable on x86_64 ESU builds)",
    "evidence": "osv:CLSA-2026-1783075621",
    "products": [
      {
        "name": {
          "value": "thunderbird",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "115.4.1-1.el9_2.alma.tuxcare.els16",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1783075621",
      "aliases": [
        "CLSA-2026-1783075621"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "115.4.1-1.el9_2.alma.tuxcare.els16"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird",
            "purl": "pkg:rpm/tuxcare/thunderbird?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1783075621.json"
          }
        }
      ],
      "modified": "2026-10-26T09:30:09.773581828Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-12313",
        "CVE-2026-33636"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1783075621.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-12313",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33636"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-12313",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-33636",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 446875,
  "published_at": "2026-07-03T10:47:19+00:00"
}