Answer in brief
CVE-2026-93683 records a Medium severity (CVSS 6.4) vulnerability in Dpdk: dpdk: guest-triggered out-of-bounds walk via vhost indirect descriptor length toctou. The current sources do not mark it as known exploited. The current feed maps Red Hat/dpdk (generic), Red Hat/openvswitch (generic), Red Hat/openvswitch2.11 (generic), Red Hat/openvswitch2.12 (generic) and additional mapped packages. 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 6.4. 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 Red Hat/dpdk (generic), Red Hat/openvswitch (generic), Red Hat/openvswitch2.11 (generic), Red Hat/openvswitch2.12 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Red Hat/dpdkgeneric | * | Not reported |
| Red Hat/openvswitchgeneric | * | Not reported |
| Red Hat/openvswitch2.11generic | * | Not reported |
| Red Hat/openvswitch2.12generic | * | Not reported |
| Red Hat/openvswitch2.13generic | * | Not reported |
| Red Hat/openvswitch2.15generic | * | Not reported |
| Red Hat/openvswitch2.16generic | * | Not reported |
| Red Hat/openvswitch2.17generic | * | Not reported |
| Red Hat/openvswitch3.0generic | * | Not reported |
| Red Hat/openvswitch3.1generic | * | Not reported |
| Red Hat/openvswitch3.2generic | * | Not reported |
| Red Hat/openvswitch3.3generic | * | Not reported |
| Red Hat/openvswitch3.4generic | * | Not reported |
| Red Hat/openvswitch3.5generic | * | Not reported |
| Red Hat/openvswitch3.6generic | * | Not reported |
Published upstream
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 14, 2026
A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.
Quoted source text, attributed separately from HOL analysis.