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CVE-2024-57886

Estado: AnalizadaMedia (5.5)—

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

mm/damon/core: fix new damon_target objects leaks on damon_commit_targets()

Patch series "mm/damon/core: fix memory leaks and ignored inputs from damon_commit_ctx()".

Due to two bugs in damon_commit_targets() and damon_commit_schemes(), which are called from damon_commit_ctx(), some user inputs can be ignored, and some mmeory objects can be leaked. Fix those.

Note that only DAMON sysfs interface users are affected. Other DAMON core API user modules that more focused more on simple and dedicated production usages, including DAMON_RECLAIM and DAMON_LRU_SORT are not using the buggy function in the way, so not affected.

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This patch (of 2):

When new DAMON targets are added via damon_commit_targets(), the newly created targets are not deallocated when updating the internal data (damon_commit_target()) is failed. Worse yet, even if the setup is successfully done, the new target is not linked to the context. Hence, the new targets are always leaked regardless of the internal data setup failure. Fix the leaks.

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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          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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      "description": [
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          "value": "CWE-401"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/core: fix new damon_target objects leaks on damon_commit_targets()\n\nPatch series \"mm/damon/core: fix memory leaks and ignored inputs from\ndamon_commit_ctx()\".\n\nDue to two bugs in damon_commit_targets() and damon_commit_schemes(),\nwhich are called from damon_commit_ctx(), some user inputs can be ignored,\nand some mmeory objects can be leaked.  Fix those.\n\nNote that only DAMON sysfs interface users are affected.  Other DAMON core\nAPI user modules that more focused more on simple and dedicated production\nusages, including DAMON_RECLAIM and DAMON_LRU_SORT are not using the buggy\nfunction in the way, so not affected.\n\n\nThis patch (of 2):\n\nWhen new DAMON targets are added via damon_commit_targets(), the newly\ncreated targets are not deallocated when updating the internal data\n(damon_commit_target()) is failed.  Worse yet, even if the setup is\nsuccessfully done, the new target is not linked to the context.  Hence,\nthe new targets are always leaked regardless of the internal data setup\nfailure.  Fix the leaks."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mm/damon/core: corrige nuevas fugas de objetos damon_target en damon_commit_targets() Serie de parches \"mm/damon/core: corrige fugas de memoria y entradas ignoradas de damon_commit_ctx()\". Debido a dos errores en damon_commit_targets() y damon_commit_schemes(), que se llaman desde damon_commit_ctx(), algunas entradas de usuario pueden ignorarse y algunos objetos de memoria pueden filtrarse. Arréglelos. Tenga en cuenta que solo los usuarios de la interfaz sysfs de DAMON se ven afectados. Otros módulos de usuario de la API del núcleo de DAMON que se centran más en usos de producción simples y dedicados, incluidos DAMON_RECLAIM y DAMON_LRU_SORT, no utilizan la función con errores de la misma manera, por lo que no se ven afectados. Este parche (de 2): Cuando se agregan nuevos objetivos DAMON a través de damon_commit_targets(), los objetivos recién creados no se desasignan cuando falla la actualización de los datos internos (damon_commit_target()). Peor aún, incluso si la configuración se realiza correctamente, el nuevo objetivo no está vinculado al contexto. Por lo tanto, los nuevos objetivos siempre se filtran independientemente de la falla de configuración de los datos internos. Corrija las filtraciones."
    }
  ],
  "lastModified": "2026-06-17T08:14:08.920",
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