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Back to active CVEs
High · CVSS 8.6CVE-2026-100236

Dpdk: dpdk: heap out-of-bounds read/write in gso header copyCVE-2026-100236

Answer in brief

CVE-2026-100236 records a High severity (CVSS 8.6) vulnerability in Dpdk: dpdk: heap out-of-bounds read/write in gso header copy. 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
High · CVSS 8.6
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 8.6. 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 run software GSO (rte_gso_segment / testpmd --enable-gso) on untrusted packets. Size direct_pool larger than the max header (~208 B tunneled). That does not fully cover the short-first-segment over-read.

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 GSO library. When software GSO copies packet headers into a new mbuf, it does not check that the header fits in the source first segment or in the destination buffer, and a header longer than the configured GSO segment size can underflow the payload-size calculation. A remote or guest-supplied packet processed with software GSO can trigger an out-of-bounds read or write.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Junos OS and Junos OS Evolved: In a non-4byte-AS scenario a specific BGP update causes an rpd crashAlso CWE-787
  • Junos OS and Junos OS Evolved: An out-of-bounds write causes an rpd crash when IS-IS backup selection is usedAlso CWE-787
  • Junos OS and Junos OS Evolved: An attacker causes a routing daemon crash when BGP EVPN RIB telemetry is usedAlso CWE-787
  • F´: FpySequencer Integer Overflow in Stack Offset/Size Validation Leading to Out-of-Bounds WriteAlso CWE-787
  • PAN-OS: Authenticated Remote Code Execution (RCE) in the Management InterfaceSame generic ecosystem
  • Junos OS and Junos OS Evolved: In a scenario with VPN-flowspec and BMP monitoring a specific BGP update causes an rpd crashSame generic ecosystem

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