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CVE-2021-31829

Estado: ModificadaMedia (5.5)—

El archivo kernel/bpf/verifier.c en el kernel de Linux versiones hasta 5.12.1, lleva a cabo cargas especulativas no deseadas, conllevando a una divulgación del contenido de la pila por medio de ataques side-channel, también se conoce como CID-801c6058d14a. La preocupación específica no es proteger el área de la pila de BPF contra cargas especulativas. Además, la pila de BPF puede contener datos no inicializados que pueden representar información confidencial previamente operada por el kernel

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 (3)

Debian — Debian LinuxFedoraproject — FedoraLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-31829",
  "cveTags": [],
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "value": "CWE-863"
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      "value": "kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel."
    },
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      "value": "El archivo kernel/bpf/verifier.c en el kernel de Linux versiones hasta 5.12.1, lleva a cabo cargas especulativas no deseadas, conllevando a una divulgación del contenido de la pila por medio de ataques side-channel, también se conoce como CID-801c6058d14a. La preocupación específica no es proteger el área de la pila de BPF contra cargas especulativas. Además, la pila de BPF puede contener datos no inicializados que pueden representar información confidencial previamente operada por el kernel"
    }
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  "lastModified": "2026-06-17T03:52:18.493",
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