CVE-2026-62432
evtchn: Race between FIFO expand and reset
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | xen |
| Product | xen |
| Published | Jul 28, 2026 |
| Last Updated | Jul 28, 2026 |
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Affected Versions
Xen / Xen
All versions affected