Upstream information

CVE-2020-15852 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.6
Vector AV:L/AC:L/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.8 7
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector Local Local
Access Complexity Low High
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1174063 [RESOLVED / WORKSFORME]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
CAASP (1.0) xen Not affected
CAASP (2.0) xen Not affected
CAASP (3.0) xen Not affected
SLE-HPC (12) kernel-default Not affected
SLE-HPC (12) kernel-source Not affected
SLE-HPC (12) xen Not affected
SLES (12) kernel-default Not affected
SLES (12) kernel-source Not affected
SLES (12) xen Not affected
SLES-BCL (12) kernel-default Not affected
SLES-BCL (12) kernel-source Not affected
SLES-BCL (12) xen Not affected
SLES-ESPOS (12) kernel-default Not affected
SLES-ESPOS (12) kernel-source Not affected
SLES-LTSS (12) kernel-default Not affected
SLES-LTSS (12) kernel-source Not affected
SLES-LTSS (12) xen Not affected
SLES-LTSS (15) kernel-default Not affected
SLES-LTSS (15) kernel-source Not affected
SLES_SAP (12) kernel-default Not affected
SLES_SAP (12) kernel-source Not affected
SLES_SAP (12) xen Not affected
SLES_SAP (15) kernel-default Not affected
SLES_SAP (15) kernel-source Not affected
SLE_HPC-ESPOS (15) kernel-default Not affected
SLE_HPC-ESPOS (15) kernel-source Not affected
SLE_HPC-ESPOS (15) xen Not affected
SLE_HPC-LTSS (15) kernel-default Not affected
SLE_HPC-LTSS (15) kernel-source Not affected
SLE_HPC-LTSS (15) xen Not affected
SUSE_SLES_LTSS (11) kernel-default Not affected
SUSE_SLES_LTSS (11) kernel-source Not affected
SUSE_SLES_LTSS (11) xen Not affected
hpe-helion-openstack (8) kernel-default Not affected
hpe-helion-openstack (8) kernel-source Not affected
ses (5) kernel-default Not affected
ses (5) kernel-source Not affected
sle-module-basesystem (15) kernel-default Not affected
sle-module-basesystem (15) kernel-source Not affected
sle-module-basesystem (15) xen Not affected
sle-module-development-tools (15) kernel-default Not affected
sle-module-development-tools (15) kernel-source Not affected
sle-module-server-applications (15) xen Not affected
sle-pos (11) kernel-default Not affected
sle-pos (11) kernel-source Not affected
sle-pos (12) kernel-default Not affected
sle-pos (12) kernel-source Not affected
sle-sdk (12) xen Not affected
suse-openstack-cloud (7) kernel-default Not affected
suse-openstack-cloud (7) kernel-source Not affected
suse-openstack-cloud (8) kernel-default Not affected
suse-openstack-cloud (8) kernel-source Not affected
suse-openstack-cloud (9) kernel-default Not affected
suse-openstack-cloud (9) kernel-source Not affected
suse-openstack-cloud-crowbar (8) kernel-default Not affected
suse-openstack-cloud-crowbar (8) kernel-source Not affected
suse-openstack-cloud-crowbar (9) kernel-default Not affected
suse-openstack-cloud-crowbar (9) kernel-source Not affected