An issue was discovered in the Linux kernel 5.5 through 5.7.9, as used in Xen through 4.13.x for x86 PV guests. An attacker may be granted the I/O port permissions of an unrelated task. This occurs because tss_invalidate_io_bitmap mishandling causes a loss of synchronization between the I/O bitmaps of TSS and Xen, aka CID-cadfad870154.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-07-20T18:54:52

Updated: 2024-08-04T13:30:22.388Z

Reserved: 2020-07-20T00:00:00

Link: CVE-2020-15852

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-07-20T19:15:11.397

Modified: 2022-12-03T14:32:06.300

Link: CVE-2020-15852

cve-icon Redhat

Severity : Moderate

Publid Date: 2020-07-16T00:00:00Z

Links: CVE-2020-15852 - Bugzilla