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Back to active CVEs
Medium · CVSS 6.5CVE-2026-86846

Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost-cryptoCVE-2026-86846

Answer in brief

CVE-2026-86846 records a Medium severity (CVSS 6.5) vulnerability in Dpdk: dpdk: guest can trigger out-of-bounds write by controlling avail ring index in vhost-crypto. 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: Do not attach a virtio-crypto vhost-user backend to untrusted guests.

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 DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.

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