Dpdk: dpdk: time-of-check/time-of-use vulnerability allowing guest-triggered out-of-bounds write in vhost-crypto
CVSS score
8.8
EPSS probability
%0.1
Risk score
0.0
Published
4 d ago
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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 was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot double-fetches a guest descriptor next index, allowing a malicious guest to cause an out-of-bounds access in the host backend.
This vulnerability carries high risk to confidentiality, integrity, and availability due to its high CVSS score and the potential for guest-triggered out-of-bounds access in the host backend.
What should be done?
- Follow vendor advisories.
- Review current official updates and patch statuses.
- Keep DPDK lib/vhost components updated.
Chain of evidence and sources
DPDK lib/vhost vhost-crypto bileşeninde bir time-of-check/time-of-use zafiyeti bulunmaktadır.
Dolaylı tanımlayıcı anlık görüntüsü, konuk tanımlayıcı sonraki indeksini iki kez getirerek kötü amaçlı bir konuğun ana bilgisayar arka ucunda sınır dışı erişime neden olmasına izin verir.
Show the technical text from the sources
A flaw was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot double-fetches a guest descriptor next index, allowing a malicious guest to cause an out-of-bounds access in the host backend.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE: CWE-367
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-2026-86848 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 |
|---|---|---|---|---|
| 8.8 | CVSS V3_1 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | CVE CNA |
| 8.8 | CVSS V31 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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-2026-86848 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-2026-86848 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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