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Vulnerabilities CVE-2026-64018

CVE-2026-64018

None
Open
TLP:CLEAR

net: mana: validate rx_req_idx to prevent out-of-bounds array access

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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.

Details

EPSS Score
0.14%

4th percentile

Confidence
90%
Published
Jul 19, 2026
Last Modified
Jul 19, 2026
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