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

CVE-2026-64018

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
30/07/2026

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net: mana: validate rx_req_idx to prevent out-of-bounds array access<br /> <br /> In mana_hwc_rx_event_handler(), rx_req_idx is derived from<br /> sge-&gt;address in DMA-coherent memory. In Confidential VMs<br /> (SEV-SNP/TDX), this memory is shared unencrypted and HW can modify<br /> WQE contents at any time. No bounds check exists on rx_req_idx,<br /> which can lead to an out-of-bounds access into reqs[].<br /> <br /> Add bounds check on rx_req_idx in mana_hwc_rx_event_handler() before<br /> using it to index the reqs[] array.