PT-2026-65474 · Xen · Xen

CVE-2026-62432 · Published 2026-07-28 · Updated 2026-07-28

Mitre

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

The EVTCHNOP expand array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP reset, resulting in dereferencing a NULL pointer.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2026-62432

Affected Products

Xen

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-62432 · Security Note
• http://xenbits.xen.org/xsa/advisory-505.html · Note
• https://xenbits.xenproject.org/xsa/advisory-505.html · Note