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 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.

• CWE-129
• CWE-125

• https://git.kernel.org/stable/c/01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01Patch
• https://git.kernel.org/stable/c/355e9f2b2a7887ca38100127989af3e422ba71d0Patch
• https://git.kernel.org/stable/c/5ddc715324badd7f2641bc177db1d027b402adaePatch
• https://git.kernel.org/stable/c/763a372d344fb12fae566d36ddb46e92454ad58cPatch
• https://git.kernel.org/stable/c/b809d0409991b75a6cff846a5ac27c3062953f84Patch
• https://git.kernel.org/stable/c/fa627a5eaa83fc0261f44ef3769693b886ca6e27Patch
• https://git.kernel.org/stable/c/ff1d5af207bcea857d45fe81505f1bc4b29eaef0Patch

Published

Jul 19, 2026

Last Modified

Oct 19, 2026

Status

Modified

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