CVE-2026-62427
Severity CVSS v4.0:
Pending analysis
Type:
CWE-284
Improper Access Control
Publication date:
28/07/2026
Last modified:
28/07/2026
Description
[This CNA information record relates to multiple CVEs; the<br />
text explains which aspects/vulnerabilities correspond to which CVE.]<br />
<br />
To manage the system, sysctl and platform operations are used by the<br />
control domain or a possible Xenstore domain. Some of these operations<br />
may not be executed in parallel, so a system-wide lock each is used.<br />
The way those locks are acquired is, however, not providing any fairness.<br />
Furthermore, with XSM/Flask in use, the lock acquire will, for some<br />
operations, occur ahead of any permission checking.<br />
<br />
The sysctl issue is CVE-2026-62426.<br />
<br />
The platform-op issue is CVE-2026-62427.
Impact
Base Score 3.x
8.80
Severity 3.x
HIGH