VYPR
Critical severity9.3NVD Advisory· Published Jul 19, 2026· Updated Jul 30, 2026

CVE-2026-64018

CVE-2026-64018

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.

Affected products

50

Patches

Vulnerability mechanics

References

7

News mentions

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