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evtchn: Race between FIFO expand and reset

🗓️ 28 Jul 2026 12:00:00Reported by Xen ProjectType 
xen
 xen
🔗 xenbits.xen.org👁 10 Views

EVTCHNOP_expand_array races EVTCHNOP_reset without a lock, causing NULL dereference and DoS.

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Vulners
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xenxenRange4.5

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28 Jul 2026 12:05Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.3
EPSS0.00212
SSVC
10