VULNERABILITY INTELLIGENCE

CVE-2026-64018

CVSS score9.3 CRITICAL
EPSS probability0.14%
CISA KEVNot currently listed
Published2026-07-19
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • nvd@nist.gov: CWE-129
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-125

Primary references