CVE-2026-62432 — evtchn: Race between FIFO expand and reset
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 dere…
Published: 2026-07-28 · CVSS: 7.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7