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z2d OOB composition could lead to invalid memory access and corruption

Type: advisorySources: OSV

z2d is a pure Zig 2D graphics library. Versions of z2d after `0.5.1` and up to and including `0.6.0`, when writing from one surface to another using `z2d.compositor.StrideCompositor.run`, and higher-level operations when the anti-aliasing mode is set to `.default` (such as `Context.fill`, `Context.stroke`, `painter.fill`, and `painter.stroke`), the source surface can be completely out-of-bounds on the x-axis, but not on the y-axis, by way of a negative offset. This results in an overflow of the value controlling the length of the stride. In non-safe optimization modes (consumers compiling with `ReleaseFast` or `ReleaseSmall`), this could potentially lead to invalid memory accesses or corruption. This issue is patched in version `0.6.1`. Users on an untagged version after `v0.5.1` and before `v0.6.1` are advised to update to address the vulnerability. Those still on Zig `0.13.0` are recommended to downgrade to `v0.5.1`.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-46333
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 19:24 UTC · Revision 1

Source evidence

z2d OOB composition could lead to invalid memory access and corruption

core-osv · Original source

Published 25 Apr 2025, 20:20 UTC

z2d is a pure Zig 2D graphics library. Versions of z2d after `0.5.1` and up to and including `0.6.0`, when writing from one surface to another using `z2d.compositor.StrideCompositor.run`, and higher-level operations when the anti-aliasing mode is set to `.default` (such as `Context.fill`, `Context.stroke`, `painter.fill`, and `painter.stroke`), the source surface can be completely out-of-bounds on the x-axis, but not on the y-axis, by way of a negative offset. This results in an overflow of the value controlling the length of the stride. In non-safe optimization modes (consumers compiling with `ReleaseFast` or `ReleaseSmall`), this could potentially lead to invalid memory accesses or corruption. This issue is patched in version `0.6.1`. Users on an untagged version after `v0.5.1` and before `v0.6.1` are advised to update to address the vulnerability. Those still on Zig `0.13.0` are recommended to downgrade to `v0.5.1`.

osv:CVE-2025-46333
Complete source record
{
  "id": "e8d3c570760707c132f6a3b9cd3a4dd3feefec1b529c231e216da86f623bdfb9",
  "url": "https://osv.dev/vulnerability/CVE-2025-46333",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "z2d OOB composition could lead to invalid memory access and corruption",
    "summary": "z2d is a pure Zig 2D graphics library. Versions of z2d after `0.5.1` and up to and including `0.6.0`, when writing from one surface to another using `z2d.compositor.StrideCompositor.run`, and higher-level operations when the anti-aliasing mode is set to `.default` (such as `Context.fill`, `Context.stroke`, `painter.fill`, and `painter.stroke`), the source surface can be completely out-of-bounds on the x-axis, but not on the y-axis, by way of a negative offset. This results in an overflow of the value controlling the length of the stride. In non-safe optimization modes (consumers compiling with `ReleaseFast` or `ReleaseSmall`), this could potentially lead to invalid memory accesses or corruption. This issue is patched in version `0.6.1`. Users on an untagged version after `v0.5.1` and before `v0.6.1` are advised to update to address the vulnerability. Those still on Zig `0.13.0` are recommended to downgrade to `v0.5.1`.",
    "evidence": "osv:CVE-2025-46333",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-46333",
      "aliases": [
        "CVE-2025-46333",
        "GHSA-mm4c-p35v-7hx3"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/vancluever/z2d",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a99bf85d38d716d30b79c3546e7063af2e861f49"
                },
                {
                  "last_affected": "5d41e5ed8f388fc3fa39210cc93ee5584e7d7d6f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.5.1"
                      },
                      {
                        "last_affected": "0.6.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.6.0",
            "v0.5.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-46333.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.606384897Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46333.json",
        "https://github.com/vancluever/z2d/security/advisories/GHSA-mm4c-p35v-7hx3",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-46333",
        "https://github.com/vancluever/z2d/issues/104",
        "https://github.com/vancluever/z2d/issues/105"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-119",
          "CWE-122",
          "CWE-190"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46333.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-46333",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506138,
  "published_at": "2025-04-25T20:20:22.202+00:00"
}