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CVE-2021-35477

Status: ModifiedMedium (5.5)—

In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Debian — Debian LinuxFedoraproject — FedoraLinux — Linux Kernel

CWEs

References

Raw JSON (NVD)

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          "version": "2.0.3",
          "timestamp": "2026-10-08T21:00:41.001774Z"
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    },
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      "lang": "es",
      "value": "En el kernel de Linux versiones 5.13.7, un programa BPF sin privilegios puede obtener información confidencial de la memoria del kernel por medio de un ataque de canal lateral de Omisión de Almacenamiento Especulativo porque una determinada operación de almacenamiento anticipada no ocurre necesariamente antes de una operación de almacenamiento que tiene un valor controlado por el atacante"
    }
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  "lastModified": "2026-10-08T21:17:36.503",
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