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  4. CVE 2026 86856 dpdk dpdk stack and heap buffer overflow in nfp
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Back to active CVEs
Medium · CVSS 6.5CVE-2026-86856

Dpdk: dpdk: stack and heap buffer overflow in nfp vdpa driverCVE-2026-86856

Answer in brief

CVE-2026-86856 records a Medium severity (CVSS 6.5) vulnerability in Dpdk: dpdk: stack and heap buffer overflow in nfp vdpa driver. The current sources do not mark it as known exploited. The current feed maps Red Hat/dpdk (generic), Red Hat/grout (generic), Red Hat/openvswitch (generic), Red Hat/openvswitch2.11 (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.

Published Oct 14, 2026Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.5
Exploitation
Not marked as known exploited
Affected software
16 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.5. 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.

Affected scope and exposure questions

The current feed maps Red Hat/dpdk (generic), Red Hat/grout (generic), Red Hat/openvswitch (generic), Red Hat/openvswitch2.11 (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Red Hat/dpdkgeneric*Not reported
Red Hat/groutgeneric*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

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Red Hat/dpdk, Red Hat/grout, Red Hat/openvswitch.
  2. 2Review the reported fix. Source-reported workaround: Avoid using the nfp vDPA driver in production until patched. Do not attach untrusted guests to an NFP VF running with class=vdpa.

Evidence timeline and material changes

  1. Published upstream

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
Upstream source description

A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Oct 14, 2026
References
2 linked sources
Open source record