Dpdk: dpdk: control-queue descriptor double-fetch overflows host heap in dpdk vhost (vduse)
CVSS score
7.8
EPSS probability
%0.1
Risk score
0.0
Published
4 d ago
Kanıt listesindeki ürün ve sürüm eşleşmesini kontrol edin; bazı varyantlar hâlâ etkileniyor olabilir.
Impact on My Inventory
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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 flaw exists in DPDK lib/vhost affecting the VDUSE control-queue handler via a TOCTOU double-fetch of control-queue descriptors. This can cause a host heap buffer overflow with attacker-controlled content.
This vulnerability allows a local attacker with privileges to cause a memory overflow and impact the host system. Because multiple distributions and platforms are affected, following vendor advisories is critical.
What should be done?
- Monitor respective vendor security advisories
- Update Debian sid to version 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 kontrol kuyruğu tanımlayıcılarının TOCTOU çift okuması yığın arabellek taşmasına neden olur.
Zaafiyet CVSS 3.1 taban puanıyla 7.8 ve yüksek önem derecesine sahiptir.
Show the technical text from the sources
A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-362
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-2026-86562 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 |
|---|---|---|---|---|
| 7.8 | CVSS V31 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD |
| 7.8 | CVSS V3_1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CVE CNA |
| 7.8 | CVSS 3.x | — | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | 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-2026-86562 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-2026-86562 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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