CVE-2026-43079 (GCVE-0-2026-43079)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-11 22:17
VLAI?
Title
perf/x86/intel/uncore: Skip discovery table for offline dies
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: edae1f06c2cda41edffc93de6aedc8ba8dc883c3 , < cfab2c817d2e7e0bee98d66850246ce842ed5f18 (git)
Affected: edae1f06c2cda41edffc93de6aedc8ba8dc883c3 , < 6cfc187d85f18f976d0fe527d4c6f6171542cc19 (git)
Affected: edae1f06c2cda41edffc93de6aedc8ba8dc883c3 , < f34feda8e0c9535fee3f8870ce8bab53c2798f71 (git)
Affected: edae1f06c2cda41edffc93de6aedc8ba8dc883c3 , < 7a2cb02437d92ed14fe494d8994056d5bd2c72b4 (git)
Affected: edae1f06c2cda41edffc93de6aedc8ba8dc883c3 , < 7b568e9eba2fad89a696f22f0413d44cf4a1f892 (git)
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Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 6.6.136 , ≤ 6.6.* (semver)
Unaffected: 6.12.83 , ≤ 6.12.* (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "arch/x86/events/intel/uncore_discovery.c"
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          "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."
        }
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      "providerMetadata": {
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        "shortName": "Linux"
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    "cveId": "CVE-2026-43079",
    "datePublished": "2026-05-06T07:40:15.767Z",
    "dateReserved": "2026-05-01T14:12:55.983Z",
    "dateUpdated": "2026-05-11T22:17:19.072Z",
    "state": "PUBLISHED"
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  }
}


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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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