[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the… (CVE-2026-62426)
CVE-2026-62426 is a vulnerability related to the management of system-wide locks used in sysctl operations within a control domain or Xenstore domain. The locks are not acquired with fairness, and when XSM/Flask security modules are enabled, the lock acquisition can occur before permission checks. This can lead to potential security issues involving confidentiality, integrity, and availability.
AI Analysis
Technical Summary
This vulnerability concerns the use of system-wide locks for sysctl operations in a Xen environment. The locking mechanism lacks fairness, potentially causing contention or denial of service. Additionally, with XSM/Flask enabled, locks may be acquired before permission checks, which could allow unauthorized operations to proceed. The issue is identified as CWE-412 (Improper Locking).
Potential Impact
The vulnerability has a high impact on confidentiality, integrity, and availability as indicated by the CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Improper lock acquisition can lead to race conditions or unauthorized access to system controls, potentially allowing attackers with limited privileges to escalate their access or disrupt system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, monitoring vendor advisories for updates is recommended.
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the… (CVE-2026-62426)
Description
CVE-2026-62426 is a vulnerability related to the management of system-wide locks used in sysctl operations within a control domain or Xenstore domain. The locks are not acquired with fairness, and when XSM/Flask security modules are enabled, the lock acquisition can occur before permission checks. This can lead to potential security issues involving confidentiality, integrity, and availability.
CVSS v3.1
Score 8.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns the use of system-wide locks for sysctl operations in a Xen environment. The locking mechanism lacks fairness, potentially causing contention or denial of service. Additionally, with XSM/Flask enabled, locks may be acquired before permission checks, which could allow unauthorized operations to proceed. The issue is identified as CWE-412 (Improper Locking).
Potential Impact
The vulnerability has a high impact on confidentiality, integrity, and availability as indicated by the CVSS vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Improper lock acquisition can lead to race conditions or unauthorized access to system controls, potentially allowing attackers with limited privileges to escalate their access or disrupt system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch information is provided in the available data. Until a patch is available, monitoring vendor advisories for updates is recommended.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-f8j9-mrwg-r7g5
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-62426"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6941de9c2644c7f86c5876
Added to database: 07/28/2026, 23:57:18 UTC
Last enriched: 07/29/2026, 11:23:36 UTC
Last updated: 09/11/2026, 22:06:34 UTC
Views: 54
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