CVE-2026-64018
Last modified
CVE-2026-64018 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < 5ddc715324badd7f2641bc177db1d027b402adae; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < ff1d5af207bcea857d45fe81505f1bc4b29eaef0; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < 01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < 763a372d344fb12fae566d36ddb46e92454ad58c; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < fa627a5eaa83fc0261f44ef3769693b886ca6e27; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < 355e9f2b2a7887ca38100127989af3e422ba71d0; >= ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f, < b809d0409991b75a6cff846a5ac27c3062953f84 |
| Linux | Linux | 5.13 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
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