CVE-2026-98363 (GCVE-0-2026-98363)
Vulnerability from cvelistv5
Published
2026-10-06 08:46
Modified
2026-10-19 09:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS scpi_dvfs_get_info() already rejected a zero opp_count, but still trusted any larger value from the SCP firmware. The shared-memory reply only holds MAX_DVFS_OPPS entries in buf.opps[]; a bigger count over-reads that array and then sizes the allocated OPP table incorrectly (garbage OPPs / OOB). The missing upper bound dates back to the original SCPI DVFS support. Reject zero and out-of-range counts in one check and return -EINVAL.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
Version: 8cb7cf56c9fe5412de238465b27ef35b4d2801aa
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{
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          "programFiles": [
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              "version": "0",
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      "cpeApplicability": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS\n\nscpi_dvfs_get_info() already rejected a zero opp_count, but still trusted\nany larger value from the SCP firmware. The shared-memory reply only holds\nMAX_DVFS_OPPS entries in buf.opps[]; a bigger count over-reads that array\nand then sizes the allocated OPP table incorrectly (garbage OPPs / OOB).\nThe missing upper bound dates back to the original SCPI DVFS support.\n\nReject zero and out-of-range counts in one check and return -EINVAL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:18:15.202Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/1aadbef648e92ca642125f188f99b0a26628e3ba"
        },
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          "url": "https://git.kernel.org/stable/c/7daaa684097377b66b98a832de307688a7f3bbc7"
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        {
          "url": "https://git.kernel.org/stable/c/f17865332cc4ceaac846bcd7c28badbaedfabeff"
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        },
        {
          "url": "https://git.kernel.org/stable/c/32471d84a487c7fd74532bc96be56f8028cf4a3f"
        }
      ],
      "title": "firmware: arm_scpi: reject DVFS OPP count above MAX_DVFS_OPPS",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98363",
    "datePublished": "2026-10-06T08:46:49.235Z",
    "dateReserved": "2026-09-25T10:25:14.344Z",
    "dateUpdated": "2026-10-19T09:18:15.202Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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