ghsa-99r2-xh56-23cv
Vulnerability from github
Published
2025-06-18 12:30
Modified
2025-06-18 12:30
Details

In the Linux kernel, the following vulnerability has been resolved:

sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator

BPF programs may call next() and destroy() on BPF iterators even after new() returns an error value (e.g. bpf_for_each() macro ignores error returns from new()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized state after an error return causing bpf_iter_scx_dsq_next() to dereference garbage data. Make bpf_iter_scx_dsq_new() always clear $kit->dsq so that next() and destroy() become noops.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38012"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T10:15:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: bpf_iter_scx_dsq_new() should always initialize iterator\n\nBPF programs may call next() and destroy() on BPF iterators even after new()\nreturns an error value (e.g. bpf_for_each() macro ignores error returns from\nnew()). bpf_iter_scx_dsq_new() could leave the iterator in an uninitialized\nstate after an error return causing bpf_iter_scx_dsq_next() to dereference\ngarbage data. Make bpf_iter_scx_dsq_new() always clear $kit-\u003edsq so that\nnext() and destroy() become noops.",
  "id": "GHSA-99r2-xh56-23cv",
  "modified": "2025-06-18T12:30:31Z",
  "published": "2025-06-18T12:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38012"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0102989af4c334d1d98b2a0fd4d61a5152e39b72"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/255dd31bfc4a67a19b1fc2cd130a50284dadfe3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/428dc9fc0873989d73918d4a9cc22745b7bbc799"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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