Bug 2508016 (CVE-2026-62432) - CVE-2026-62432 xen: Xen: Race condition in event channel handling can lead to denial of service
Summary: CVE-2026-62432 xen: Xen: Race condition in event channel handling can lead to...
Keywords:
Status: NEW
Alias: CVE-2026-62432
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2508145
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-28 14:02 UTC by OSIDB Bzimport
Modified: 2026-07-28 18:01 UTC (History)
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Description OSIDB Bzimport 2026-07-28 14:02:10 UTC 
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.
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