CVE Watch28 jul 2026

CVE-2026-62427

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage

CVSS

8.8

Alto

EPSS

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KEV

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Exploit Today

0-100

Publicado: 28 jul 2026 · Última mod.: 28 jul 2026 · CWE-284 · CWE-305

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these operations may not be executed in parallel, so a system-wide lock each is used. The way those locks are acquired is, however, not providing any fairness. Furthermore, with XSM/Flask in use, the lock acquire will, for some operations, occur ahead of any permission checking. The sysctl issue is CVE-2026-62426. The platform-op issue is CVE-2026-62427.

Referencias oficiales

xenbits.xenproject.orghttps://xenbits.xenproject.org/xsa/advisory-499.html

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