Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-68154

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
10/08/2026
Última modificación:
19/08/2026

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> libceph: reject zero bucket types in crush_decode<br /> <br /> CRUSH bucket type 0 is reserved for devices. The mapper relies on<br /> that invariant and uses type 0 to identify leaf devices.<br /> <br /> If crush_decode() accepts a bucket with type 0, a malformed CRUSH map<br /> can make the mapper treat a negative bucket ID as a device and pass it<br /> to is_out(), which then indexes the OSD weight array with a negative<br /> value.<br /> <br /> Reject zero bucket types while decoding the CRUSH map so the invalid<br /> state never reaches the mapper.