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CVE Watch5 sept 2026

CVE-2026-0799

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not

CVSS

8.7

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 5 sept 2026 · Última mod.: 5 sept 2026 · CWE-125 · CWE-129 · CWE-787

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.

Referencias oficiales
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