CVE-2026-86847 (GCVE-0-2026-86847)

Vulnerability from cvelistv5 – Published: 2026-10-14 17:52 – Updated: 2026-10-14 17:52
VLAI
Title
Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
Summary
A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE
  • CWE-824 - Access of Uninitialized Pointer
Assigner
redhat CNA under the redhat root
CNA scorecard B 81/100 over 1011 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-86847 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2529847 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-10-14 15:01
Credits
Red Hat would like to thank Anthropic Research for reporting this issue.
Show details on NVD website
To clipboard 

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                "privilegesRequired": "LOW",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 2.0,
              "impactScore": 4.0,
              "source": "secalert@redhat.com",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-10-14T18:19:19.040",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/security/cve/CVE-2026-86847"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2529847"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-824"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-14T18:50:51+00:00",
      "cve": "CVE-2026-86847",
      "id": "CVE-2026-86847",
      "initial_release_date": "2026-10-14T15:01:54.300065+00:00",
      "product_status:known_affected": "149",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dpdk: dpdk: Guest can trigger infinite loop in vhost-crypto writeback chain cleanup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86847.json",
      "version": "3"
    }
  }
}



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