CVE-2026-43079 (GCVE-0-2026-43079)
Vulnerability from cvelistv5
Published
2026-05-06 07:40
Modified
2026-06-01 16:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.
References
Impacted products
Vendor Product Version
Linux Linux Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
Version: edae1f06c2cda41edffc93de6aedc8ba8dc883c3
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{
  "containers": {
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          "programFiles": [
            "arch/x86/events/intel/uncore_discovery.c"
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      ],
      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/x86/intel/uncore: Skip discovery table for offline dies\n\nThis warning can be triggered if NUMA is disabled and the system\nboots with fewer CPUs than the number of CPUs in die 0.\n\nWARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore]\n\nCurrently, the discovery table continues to be parsed even if all CPUs\nin the associated die are offline.  This can lead to an array overflow\nat \"pmu-\u003eboxes[die] = box\" in uncore_pci_pmu_register(), which may\ntrigger the warning above or cause other issues."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-01T16:14:21.072Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9de"
        },
        {
          "url": "https://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384a"
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        {
          "url": "https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18"
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        },
        {
          "url": "https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892"
        }
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      "title": "perf/x86/intel/uncore: Skip discovery table for offline dies",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43079",
    "datePublished": "2026-05-06T07:40:15.767Z",
    "dateReserved": "2026-05-01T14:12:55.983Z",
    "dateUpdated": "2026-06-01T16:14:21.072Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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