CVE-2026-64182 (GCVE-0-2026-64182)
Vulnerability from cvelistv5
Published
2026-07-19 15:41
Modified
2026-07-19 15:41
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: fix memory block reference leak in poison accounting memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block via find_memory_block_by_id(), which acquires a reference to the memory block device. Both helpers use the returned memory block without dropping that reference, leaking the device reference on each successful lookup. Drop the reference after updating nr_hwpoison.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5033091de814ab4b5623faed2755f3064e19e2d2
Version: 5033091de814ab4b5623faed2755f3064e19e2d2
Version: 5033091de814ab4b5623faed2755f3064e19e2d2
Version: 5033091de814ab4b5623faed2755f3064e19e2d2
Version: 5033091de814ab4b5623faed2755f3064e19e2d2
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/base/memory.c"
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      "cpeApplicability": [
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          "nodes": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrivers/base/memory: fix memory block reference leak in poison accounting\n\nmemblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block\nvia find_memory_block_by_id(), which acquires a reference to the memory\nblock device.\n\nBoth helpers use the returned memory block without dropping that\nreference, leaking the device reference on each successful lookup.  Drop\nthe reference after updating nr_hwpoison."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:41:05.186Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa"
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        {
          "url": "https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455"
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        {
          "url": "https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951"
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      "title": "drivers/base/memory: fix memory block reference leak in poison accounting",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64182",
    "datePublished": "2026-07-19T15:41:05.186Z",
    "dateReserved": "2026-07-19T07:54:57.039Z",
    "dateUpdated": "2026-07-19T15:41:05.186Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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