net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases

{
  "id": "e907d94f83b12fd160ea8b64de476eed208120abdd64877bbe52f5e0c1a43afb",
  "url": "https://osv.dev/vulnerability/CVE-2025-21788",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases If the XDP program doesn't result in XDP_PASS then we leak the memory allocated by am65_cpsw_build_skb(). It is pointless to allocate SKB memory before running the XDP program as we would be wasting CPU cycles for cases other than XDP_PASS. Move the SKB allocation after evaluating the XDP program result. This fixes the memleak. A performance boost is seen for XDP_DROP test. XDP_DROP test: Before: 460256 rx/s 0 err/s After: 784130 rx/s 0 err/s",
    "evidence": "osv:CVE-2025-21788",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.12.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-21788",
      "aliases": [
        "CVE-2025-21788"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "8acacc40f7337527ff84cd901ed2ef0a2b95b2b6"
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                {
                  "fixed": "1bba1d042107167164a0ae3a843fdf650ab005d7"
                },
                {
                  "fixed": "dc11f049612b9d926aca2e55f8dc9d82850d0da3"
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                {
                  "fixed": "5db843258de1e4e6b1ef1cbd1797923c9e3de548"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21788.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.10.0"
                },
                {
                  "fixed": "6.12.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21788.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:52.501463420Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1bba1d042107167164a0ae3a843fdf650ab005d7",
        "https://git.kernel.org/stable/c/5db843258de1e4e6b1ef1cbd1797923c9e3de548",
        "https://git.kernel.org/stable/c/dc11f049612b9d926aca2e55f8dc9d82850d0da3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21788.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-21788",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21788.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-21788",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 521088,
  "published_at": "2025-02-27T02:18:27.336+00:00"
}