Answer in brief
CVE-2026-64018 records a Critical severity (CVSS 9.3) vulnerability in net: mana: validate rx_req_idx to prevent out-of-bounds array access. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <5ddc715324badd7f2641bc177db1d027b402adae || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <ff1d5af207bcea857d45fe81505f1bc4b29eaef0 || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01 || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <763a372d344fb12fae566d36ddb46e92454ad58c || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <fa627a5eaa83fc0261f44ef3769693b886ca6e27 || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <355e9f2b2a7887ca38100127989af3e422ba71d0 || >=ca9c54d2d6a5ab2430c4eda364c77125d62e5e0f <b809d0409991b75a6cff846a5ac27c3062953f84 | 5ddc715324badd7f2641bc177db1d027b402adae, ff1d5af207bcea857d45fe81505f1bc4b29eaef0, 01f7f893d5e1baae995beeb86cd0f3e6bb2a3b01, 763a372d344fb12fae566d36ddb46e92454ad58c, fa627a5eaa83fc0261f44ef3769693b886ca6e27, 355e9f2b2a7887ca38100127989af3e422ba71d0, b809d0409991b75a6cff846a5ac27c3062953f84 |
| Linux/Linuxgeneric | 5.13 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.