CVE-2025-38012 (GCVE-0-2025-38012)

Vulnerability from cvelistv5 – Published: 2025-06-18 09:28 – Updated: 2025-06-18 09:28
VLAI?
Title
sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 650ba21b131ed1f8ee57826b2c6295a3be221132 , < 0102989af4c334d1d98b2a0fd4d61a5152e39b72 (git)
Affected: 650ba21b131ed1f8ee57826b2c6295a3be221132 , < 255dd31bfc4a67a19b1fc2cd130a50284dadfe3a (git)
Affected: 650ba21b131ed1f8ee57826b2c6295a3be221132 , < 428dc9fc0873989d73918d4a9cc22745b7bbc799 (git)
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    Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.30 , ≤ 6.12.* (semver)
Unaffected: 6.14.8 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/sched/ext.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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              "versionType": "git"
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "version": "6.12"
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              "versionType": "semver"
            },
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              "version": "6.14.8",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.30",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14.8",
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T09:28:22.057Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0102989af4c334d1d98b2a0fd4d61a5152e39b72"
        },
        {
          "url": "https://git.kernel.org/stable/c/255dd31bfc4a67a19b1fc2cd130a50284dadfe3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/428dc9fc0873989d73918d4a9cc22745b7bbc799"
        }
      ],
      "title": "sched_ext: bpf_iter_scx_dsq_new() should always initialize iterator",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38012",
    "datePublished": "2025-06-18T09:28:22.057Z",
    "dateReserved": "2025-04-16T04:51:23.977Z",
    "dateUpdated": "2025-06-18T09:28:22.057Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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