channels are enabled, but without holding the correct lock. It can race
with EVTCHNOP_reset, resulting in dereferencing a NULL pointer.
Analysis and contextual insights are available on OpenCVE Cloud.
Vendor Workaround
There are no mitigations.
Tracking
Sign in to view the affected projects.
No advisories yet.
| Link | Providers |
|---|---|
| https://xenbits.xenproject.org/xsa/advisory-505.html |
|
Tue, 28 Jul 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Xen
Xen xen |
|
| Vendors & Products |
Xen
Xen xen |
Tue, 28 Jul 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-362 | |
| Metrics |
cvssV3_1
|
Tue, 28 Jul 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | evtchn: Race between FIFO expand and reset | |
| References |
|
Status: PUBLISHED
Assigner: XEN
Published:
Updated: 2026-07-28T16:33:32.509Z
Reserved: 2026-07-14T10:28:12.655Z
Link: CVE-2026-62432
Updated: 2026-07-28T16:33:32.509Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-07-28T21:00:06Z
-
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')