CVE-2026-5367 (GCVE-0-2026-5367)

Vulnerability from cvelistv5 – Published: 2026-04-24 12:25 – Updated: 2026-04-29 17:46
VLAI?
Title
Ovn: ovn: information disclosure via crafted dhcpv6 packets
Summary
A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.
Severity ?
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-130 - Improper Handling of Length Parameter Inconsistency
Assigner
References
https://access.redhat.com/errata/RHSA-2026:11694 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11695 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11696 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11698 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11700 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11701 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11702 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-5367 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2455863 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Fast Datapath for Red Hat Enterprise Linux 8 Unaffected: 0:21.12.0-145.el8fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 8 Unaffected: 0:23.06.4-30.el8fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 9 Unaffected: 0:23.06.4-30.el9fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 9 Unaffected: 0:23.09.6-16.el9fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 9 Unaffected: 0:24.03.7-82.el9fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 9 Unaffected: 0:25.03.2-100.el9fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for Red Hat Enterprise Linux 9 Unaffected: 0:25.09.2-103.el9fdp , < * (rpm)
    cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 10     cpe:/o:redhat:enterprise_linux:10::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 10     cpe:/o:redhat:enterprise_linux:10::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 8     cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 8     cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 8     cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 8     cpe:/o:redhat:enterprise_linux:8::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 9     cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Fast Datapath for RHEL 9     cpe:/o:redhat:enterprise_linux:9::fastdatapath
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
 Create a notification for this product.
    Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Date Public ?
2026-04-13 00:00
Show details on NVD website
To clipboard 

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      "cveMetadata": "{\"cveId\": \"CVE-2026-5367\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-29T17:46:56.589Z\", \"dateReserved\": \"2026-04-01T18:39:05.229Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-04-24T12:25:05.024Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
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    }
  }
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.