CVE-2026-80963 (GCVE-0-2026-80963)
Vulnerability from cvelistv5
Published
2026-09-11 19:42
Modified
2026-10-19 08:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dm-stats: fix a crash if allocation of per-cpu data fails If "dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))" fails, the code jumps to the "out" label and calls dm_stat_free. dm_stat_free does "for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram, s->histogram_alloc_size);", which crashes with NULL pointer dereference if s->stat_percpu[cpu] is NULL. This commit fixes the bug by testing s->stat_percpu[cpu] for NULL before using it.
References
Impacted products
Vendor Product Version
Linux Linux Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
Version: fd2ed4d252701d3bbed4cd3e3d267ad469bb832a
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{
  "containers": {
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          "programFiles": [
            "drivers/md/dm-stats.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\ndm-stats: fix a crash if allocation of per-cpu data fails\n\nIf \"dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))\" fails, the code\njumps to the \"out\" label and calls dm_stat_free. dm_stat_free does\n\"for_each_possible_cpu(cpu) { dm_kvfree(s-\u003estat_percpu[cpu][0].histogram,\ns-\u003ehistogram_alloc_size);\", which crashes with NULL pointer dereference\nif s-\u003estat_percpu[cpu] is NULL.\n\nThis commit fixes the bug by testing s-\u003estat_percpu[cpu] for NULL before\nusing it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:45:47.190Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a"
        },
        {
          "url": "https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704"
        },
        {
          "url": "https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291"
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        {
          "url": "https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27"
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          "url": "https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75"
        },
        {
          "url": "https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a"
        }
      ],
      "title": "dm-stats: fix a crash if allocation of per-cpu data fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80963",
    "datePublished": "2026-09-11T19:42:29.172Z",
    "dateReserved": "2026-08-26T14:34:25.810Z",
    "dateUpdated": "2026-10-19T08:45:47.190Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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