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Vulnerability record · CVE-2026-62432 · published 28 July 2026

CVE-2026-62432: Race condition vulnerability

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.

7.3 CVSS 3.1 High EPSS 0.32% · top 77.7% CWE-362 · Race condition Deferred
7.3CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
28 Jul 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

LinkTags
https://xenbits.xenproject.org/xsa/advisory-505.html
http://www.openwall.com/lists/oss-security/2026/07/28/21
http://xenbits.xen.org/xsa/advisory-505.html

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Source: NIST National Vulnerability Database (record CVE-2026-62432), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.