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 Information

Status: PUBLISHED

Assigner: mitre

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

Updated: 2020-08-10T11:06:08

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


Link: CVE-2020-15852

JSON object: View

cve-icon NVD Information

Status : Analyzed

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

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


Link: CVE-2020-15852

JSON object: View

cve-icon Redhat Information

No data.

CWE