vulnerability
Red Hat: CVE-2020-27675: kernel: xen: race condition in event-channel removal during the event-handling loop (XSA-331)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:M/Au:N/C:N/I:N/A:C) | Oct 22, 2020 | Jul 9, 2025 | Jul 9, 2025 |
Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:N/A:C)
Published
Oct 22, 2020
Added
Jul 9, 2025
Modified
Jul 9, 2025
Description
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.
Solution
no-fix-redhat-rpm-package
References
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