Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel
CVSS score
6.5
EPSS probability
—
Risk score
0.7
Published
1 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
FreeRTOS-Kernel before V11.3.3 suffers from missing queue-set type validation in the queue-set selection system call. This allows a local unprivileged task to write data beyond a pointer-sized object on the privileged kernel stack across the MPU isolation boundary.
Local unprivileged actors can bypass the MPU isolation boundary and affect sensitive privileged kernel memory integrity.
What should be done?
- Upgrade to FreeRTOS-Kernel V11.3.3
- Rebuild and reflash affected firmware
- Disable queue sets if not required
Chain of evidence and sources
FreeRTOS-Kernel V11.3.3 öncesi sürümlerde xQueueSelectFromSet içinde eksik kuyruk kümesi tür doğrulaması yer almaktadır.
Bu zafiyet, yerel ve ayrıcalıksız bir görevin MPU yalıtım sınırını aşarak ayrıcalıklı çekirdek yığınına veri yazmasına izin verir.
Sorunu gidermek için kullanıcıların FreeRTOS-Kernel V11.3.3 sürümüne yükseltme yapması ve ürün yazılımını yeniden derlemesi gerekmektedir.
Show the technical text from the sources
Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on MPU-enabled ports with queue sets enabled allows a local unprivileged task to write actor-controlled data beyond a pointer-sized object on the privileged kernel stack, affecting privileged memory across the MPU isolation boundary. To remediate this issue, users should upgrade to FreeRTOS-Kernel V11.3.3, rebuild, and reflash affected firmware. Builds that do not enable queue sets are not affected.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
CWE: CWE-843, CWE-121
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-119086 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | FreeRTOS | FreeRTOS-Kernel | 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 V40 | HIGH | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
| 8.2 | CVSS V4_0 | HIGH | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N | CVE CNA |
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N | NVD |
| 6.5 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.
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-2026-119086 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-2026-119086 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
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