rcu: Fix buffer overflow in print_cpu_stall_info()

{
  "id": "07c9d6b8ff02b3239d1ac0bdb3322c47e7cc54d26c08285e6ffddcb3fa7dcdca",
  "url": "https://osv.dev/vulnerability/CVE-2024-38576",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "rcu: Fix buffer overflow in print_cpu_stall_info()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: rcu: Fix buffer overflow in print_cpu_stall_info() The rcuc-starvation output from print_cpu_stall_info() might overflow the buffer if there is a huge difference in jiffies difference. The situation might seem improbable, but computers sometimes get very confused about time, which can result in full-sized integers, and, in this case, buffer overflow. Also, the unsigned jiffies difference is printed using %ld, which is normally for signed integers. This is intentional for debugging purposes, but it is not obvious from the code. This commit therefore changes sprintf() to snprintf() and adds a clarifying comment about intention of %ld format. Found by Linux Verification Center (linuxtesting.org) with SVACE.",
    "evidence": "osv:CVE-2024-38576",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.93",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.33",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.8.12",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.9.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-38576",
      "aliases": [
        "CVE-2024-38576"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
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                  "fixed": "4c3e2ef4d8ddd313c8ce3ac30505940bea8d6257"
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          "ranges": [
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              "type": "ECOSYSTEM",
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                  "introduced": "6.0.0"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38576.json"
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      ],
      "modified": "2026-10-28T02:30:29.718145561Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3758f7d9917bd7ef0482c4184c0ad673b4c4e069",
        "https://git.kernel.org/stable/c/4c3e2ef4d8ddd313c8ce3ac30505940bea8d6257",
        "https://git.kernel.org/stable/c/9351e1338539cb7f319ffc1210fa9b2aa27384b5",
        "https://git.kernel.org/stable/c/afb39909bfb5c08111f99e21bf5be7505f59ff1c",
        "https://git.kernel.org/stable/c/e2228ed3fe7aa838fba87c79a76fb1ad9ea47138",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38576.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-38576",
        "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/2024/38xxx/CVE-2024-38576.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-38576",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496458,
  "published_at": "2024-06-19T13:37:35.142+00:00"
}