CVE WatchOct 19, 2026

CVE-2026-64018

In the Linux kernel, the following vulnerability has been resolved: net: mana: validate rx_req_idx to prevent out-of-bounds array access I

CVSS

9.3

Critical

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Jul 19, 2026 · Last modified: Oct 19, 2026 · CWE-129 · CWE-125

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-302026-10-27

Technical description

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

Official references

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