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CVE-2022-49967

Estado: AnalizadaMedia (4.7)—

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

bpf: Fix a data-race around bpf_jit_limit.

While reading bpf_jit_limit, it can be changed concurrently via sysctl, WRITE_ONCE() in __do_proc_doulongvec_minmax(). The size of bpf_jit_limit is long, so we need to add a paired READ_ONCE() to avoid load-tearing.

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",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
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  "published": "2025-06-18T11:15:24.013",
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          "value": "CWE-362"
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    },
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: Se corrige una ejecución de datos en torno a bpf_jit_limit. Al leer bpf_jit_limit, se puede modificar simultáneamente mediante sysctl, WRITE_ONCE() en __do_proc_doulongvec_minmax(). El tamaño de bpf_jit_limit es grande, por lo que es necesario añadir un par de READ_ONCE() para evitar la fragmentación de la carga."
    }
  ],
  "lastModified": "2026-06-17T05:19:38.483",
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