CVE-2020-15852

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CVSS 3.1

7.8 high

EPSS

<1%p25

Published

Jul 20, 2020 (Jul 20, 2020)

Modified

Jun 17, 2026

Description

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.

Vendors: linux xen netapp
Products: linux kernel, xen, cloud backup, steelstore cloud integrated storage, solidfire baseboard management controller
Weakness: CWE-276
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.3%)

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