Dpdk: dpdk: guest can trigger infinite loop in vhost-crypto writeback chain cleanup
CVSS score
6.5
EPSS probability
%0.2
Risk score
0.0
Published
4 d ago
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Impact on My Inventory
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Vulnerability description
CVE AI research
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
Tam uyum
Evidence confidence
%63
Short explanation
A flaw exists in the DPDK lib/vhost vhost-crypto component where write-back chain cleanup can follow an uninitialized next pointer when guest descriptor mapping fails. This can cause the host vhost-crypto process to hang or crash.
This vulnerability allows a local attacker via a guest system to target host processes and trigger a denial of service. The patch status cannot be definitively concluded from reviewed official sources.
What should be done?
- Follow vendor security advisories
- Review related documentation for updates
Chain of evidence and sources
DPDK lib/vhost vhost-crypto bileşeninde yazma zinciri temizliği sırasında başlatılmamış işaretçi takibi hatası bulunuyor.
Konuk tanımlayıcı eşlemesi başarısız olduğunda ana makine süreci askıda kalabilir veya çökebilir.
Show the technical text from the sources
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.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CWE: CWE-824
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-2026-86847 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 |
|---|---|---|---|---|
| 6.5 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | CVE CNA |
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
1 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-2026-86847 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-2026-86847 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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