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CVE-2021-33640

Estado: ModificadaCrítica (9.8)—

After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free).

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 (2)

Fedoraproject — FedoraOpenatom — Openeuler

CWE

Referencias

JSON original (NVD)

Mostrar
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              "exploitation": "none"
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          "version": "2.0.3",
          "timestamp": "2025-04-17T14:57:23.132306Z"
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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          "privilegesRequired": "NONE",
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  "published": "2022-12-19T16:15:10.840",
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      "value": "After tar_close(), libtar.c releases the memory pointed to by pointer t. After tar_close() is called in the list() function, it continues to use pointer t: free_longlink_longname(t->th_buf) . As a result, the released memory is used (use-after-free)."
    },
    {
      "lang": "es",
      "value": "Después de tar_close(), libtar.c libera la memoria a la que apunta el puntero t. Después de llamar a tar_close() en la función list(), continúa usando el puntero t: free_longlink_longname(t->th_buf). Como resultado, la memoria liberada se utiliza (use after free)."
    }
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  "lastModified": "2026-06-17T03:54:55.210",
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