The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. All Linux versions having the fix for XSA-365 applied are vulnerable. XSA-365 was classified to affect versions back to at least 3.11.
                
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Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: XEN
Published: 2021-04-06T18:07:41
Updated: 2024-08-03T21:47:33.121Z
Reserved: 2021-03-18T00:00:00
Link: CVE-2021-28688
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2021-04-06T19:15:14.863
Modified: 2024-11-21T06:00:08.800
Link: CVE-2021-28688
 Redhat
                        Redhat
                    No data.