An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/events_base.c allows event-channel removal during the event-handling loop (a race condition). This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash via events for an in-reconfiguration paravirtualized device, aka CID-073d0552ead5.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-10-22T20:32:49

Updated: 2024-08-04T16:18:45.560Z

Reserved: 2020-10-22T00:00:00

Link: CVE-2020-27675

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-10-22T21:15:14.153

Modified: 2023-11-07T03:20:58.730

Link: CVE-2020-27675

cve-icon Redhat

Severity :

Publid Date: 2020-10-20T00:00:00Z

Links: CVE-2020-27675 - Bugzilla