FKIE_CVE-2026-74644

Vulnerability from fkie_nvd - Published: 2026-08-22 16:16 - Updated: 2026-10-14 13:10
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/damon/ops-common: putback folios on invalid migrate nid damon_pa_migrate() and damos_va_migrate() isolate folios into a local list and then call damon_migrate_pages(). When target_nid is invalid (including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages() returns early without putting the folios back to the LRU. Callers then discard the list head while those folios remain isolated with an extra reference taken by folio_isolate_lru(). The pages stay off the LRU for as long as the mapping exists (anon active+inactive counts drop while RSS does not), and the leftover references can pin the pages after the mapping is gone. Put the folios back on the invalid-nid path so ignored migration requests still return them to the LRU.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7001c0a1bc9018cd5b2b72ebebb216d738b2ec81
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/ops-common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7001c0a1bc9018cd5b2b72ebebb216d738b2ec81",
              "status": "affected",
              "version": "7c303fa1f311aadc17fa82b7bbf776412adf45de",
              "versionType": "git"
            },
            {
              "lessThan": "460181e4bb47a57776c64f0832c2096de8878cb3",
              "status": "affected",
              "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0",
              "versionType": "git"
            },
            {
              "lessThan": "cfef454862b7d2776e0955b873dd59af6b47cfcb",
              "status": "affected",
              "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0",
              "versionType": "git"
            },
            {
              "lessThan": "5deb65c34e682e7c5f5df417a70e223e8fcc5f5a",
              "status": "affected",
              "version": "7e6c3130690a01076efdf45aa02ba5d5c16849a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9d0c2d15aff96746f99a7c97221bb8ce5b62db19",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.105",
              "status": "affected",
              "version": "6.12.44",
              "versionType": "semver"
            },
            {
              "lessThan": "6.17",
              "status": "affected",
              "version": "6.16.4",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "mm/damon/ops-common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/ops-common: putback folios on invalid migrate nid\n\ndamon_pa_migrate() and damos_va_migrate() isolate folios into a local list\nand then call damon_migrate_pages().  When target_nid is invalid\n(including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()\nreturns early without putting the folios back to the LRU.\n\nCallers then discard the list head while those folios remain isolated with\nan extra reference taken by folio_isolate_lru().  The pages stay off the\nLRU for as long as the mapping exists (anon active+inactive counts drop\nwhile RSS does not), and the leftover references can pin the pages after\nthe mapping is gone.\n\nPut the folios back on the invalid-nid path so ignored migration requests\nstill return them to the LRU."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nmm/damon/ops-common: devolver folios en nid de migraci\u00f3n inv\u00e1lido\n\ndamon_pa_migrate() y damos_va_migrate() a\u00edslan folios en una lista local y luego llaman a damon_migrate_pages(). Cuando target_nid es inv\u00e1lido (incluyendo el valor predeterminado del esquema NUMA_NO_NODE / -1), damon_migrate_pages() retorna anticipadamente sin devolver los folios a la LRU.\n\nLos llamadores luego descartan el encabezado de la lista mientras esos folios permanecen aislados con una referencia adicional tomada por folio_isolate_lru(). Las p\u00e1ginas permanecen fuera de la LRU mientras exista el mapeo (los recuentos de anon activos+inactivos disminuyen mientras que el RSS no), y las referencias restantes pueden fijar las p\u00e1ginas despu\u00e9s de que el mapeo desaparezca.\n\nDevuelve los folios en la ruta de nid inv\u00e1lido para que las solicitudes de migraci\u00f3n ignoradas a\u00fan los devuelvan a la LRU."
    }
  ],
  "id": "CVE-2026-74644",
  "lastModified": "2026-10-14T13:10:00.187",
  "metrics": {},
  "published": "2026-08-22T16:16:37.730",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/460181e4bb47a57776c64f0832c2096de8878cb3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5deb65c34e682e7c5f5df417a70e223e8fcc5f5a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7001c0a1bc9018cd5b2b72ebebb216d738b2ec81"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cfef454862b7d2776e0955b873dd59af6b47cfcb"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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