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.
Published: 2020-10-22
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2483-1 linux-4.19 security update
Debian DLA Debian DLA DLA-2494-1 linux security update
EUVD EUVD EUVD-2020-20179 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.
Ubuntu USN Ubuntu USN USN-4679-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4680-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4681-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4751-1 Linux kernel vulnerabilities
History

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Subscriptions

Debian Debian Linux
Fedoraproject Fedora
Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

Reserved: 2020-10-22T00:00:00.000Z

Link: CVE-2020-27675

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

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

Modified: 2024-11-21T05:21:38.707

Link: CVE-2020-27675

cve-icon Redhat

Severity :

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

Links: CVE-2020-27675 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses