Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-bounds write
CVSS score
8.2
EPSS probability
%0.2
Risk score
0.0
Published
4 d ago
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
3
Source agreement
Tam uyum
Evidence confidence
%71
Short explanation
A high-severity vulnerability has been identified in DPDK lib/vhost where a guest can desynchronize the virtqueue size from the inflight descriptor table size, resulting in an out-of-bounds write in the host vhost process.
This vulnerability allows a privileged guest system to trigger an out-of-bounds write in the host process, potentially compromising system security.
What should be done?
- Follow the relevant vendor security advisories.
- Update Debian sid packages to 25.11.4-1 or later.
- Apply vendor patches for affected Red Hat and other packages.
Chain of evidence and sources
DPDK lib/vhost bileşeninde bir konuk sistemin virtqueue boyutunu uçuş halindeki tanımlayıcı tablo boyutuyla uyumsuz hale getirmesiyle sınır dışı yazma açığı oluşur.
Güvenlik açığı yüksek önem derecesine sahip olup CVSS taban puanı 8.2 olarak belirlenmiştir.
Show the technical text from the sources
A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-787
Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-86565 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Red Hat | Fast Datapath for RHEL 10 | View |
| 2 | Red Hat | Fast Datapath for RHEL 8 | View |
| 3 | Red Hat | Fast Datapath for RHEL 9 | View |
| 4 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 5 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 6 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 7 | Red Hat | Red Hat OpenShift Container Platform 4 | View |
| 8 | Red Hat | Red Hat OpenStack Platform 13 (Queens) | View |
| 9 | debian | dpdk (sid) | View |
| 10 | debian | dpdk (forky) | View |
| 11 | debian | dpdk (trixie) | View |
| 12 | debian | dpdk (bookworm) | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 8.2 | CVSS V3_1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | CVE CNA |
| 8.2 | CVSS V31 | HIGH | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | NVD |
| 6.7 | CVSS 3.x | — | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H/E:U | Microsoft MSRC |
Patch and Remediation Guide
Solution & Remediation Advisory
2 düzeltme kanıtı bulundu; en az 3 ürün veya sürüm hâlâ etkileniyor ya da inceleniyor.
25.11.4-1Debian sid: 25.11.4-1
Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-86565 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-86565 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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