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CVE-2023-53614

Estado: AnalizadaMedia (4.7)—

In the Linux kernel, the following vulnerability has been resolved:

mm/ksm: fix race with VMA iteration and mm_struct teardown

exit_mmap() will tear down the VMAs and maple tree with the mmap_lock held in write mode. Ensure that the maple tree is still valid by checking ksm_test_exit() after taking the mmap_lock in read mode, but before the for_each_vma() iterator dereferences a destroyed maple tree.

Since the maple tree is destroyed, the flags telling lockdep to check an external lock has been cleared. Skip the for_each_vma() iterator to avoid dereferencing a maple tree without the external lock flag, which would create a lockdep warning.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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  "published": "2025-10-04T16:15:58.227",
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/ksm: fix race with VMA iteration and mm_struct teardown\n\nexit_mmap() will tear down the VMAs and maple tree with the mmap_lock held\nin write mode.  Ensure that the maple tree is still valid by checking\nksm_test_exit() after taking the mmap_lock in read mode, but before the\nfor_each_vma() iterator dereferences a destroyed maple tree.\n\nSince the maple tree is destroyed, the flags telling lockdep to check an\nexternal lock has been cleared.  Skip the for_each_vma() iterator to avoid\ndereferencing a maple tree without the external lock flag, which would\ncreate a lockdep warning."
    }
  ],
  "lastModified": "2026-06-17T06:45:43.263",
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