objtool: Fix memory leak in create_static_call_sections()

{
  "id": "18373d25654c9f493e439a933df2da02f49b46827b21c0281d52d39f52f65661",
  "url": "https://osv.dev/vulnerability/CVE-2023-53423",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "objtool: Fix memory leak in create_static_call_sections()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: objtool: Fix memory leak in create_static_call_sections() strdup() allocates memory for key_name. We need to release the memory in the following error paths. Add free() to avoid memory leak.",
    "evidence": "osv:CVE-2023-53423",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
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        "prerequisites": [],
        "fixed_versions": [
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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          {
            "value": "6.1.18",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.2.5",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
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    "severity": "medium",
    "structured": {
      "id": "CVE-2023-53423",
      "aliases": [
        "CVE-2023-53423"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
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            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:50.027133739Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3a75866a5ceff5d4fdd5471e06c4c4d03e0298b3",
        "https://git.kernel.org/stable/c/3da73f102309fe29150e5c35acd20dd82063ff67",
        "https://git.kernel.org/stable/c/a1368eaea058e451d20ea99ca27e72d9df0d16dd",
        "https://git.kernel.org/stable/c/a8f63d747bf7c983882a5ea7456a5f84ad3acad5",
        "https://git.kernel.org/stable/c/d131718d9c45d559951f57c4b88209ca407433c4",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53423.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53423",
        "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/2023/53xxx/CVE-2023-53423.json"
      }
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    "related_cves": [
      {
        "value": "CVE-2023-53423",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 518188,
  "published_at": "2025-09-18T16:04:05.957+00:00"
}