Upstream information

CVE-2020-9391 at MITRE

Description

An issue was discovered in the Linux kernel 5.4 and 5.5 through 5.5.6 on the AArch64 architecture. It ignores the top byte in the address passed to the brk system call, potentially moving the memory break downwards when the application expects it to move upwards, aka CID-dcde237319e6. This has been observed to cause heap corruption with the GNU C Library malloc implementation.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 5.5 6.2
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Access Vector Local Local
Access Complexity Low Low
Privileges Required Low None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1165015 [RESOLVED / UPSTREAM]

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Please note that this evaluation state might be work in progress, incomplete or outdated.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
HPE Helion OpenStack 8 kernel-source Analysis
SUSE Enterprise Storage 5 kernel-source Analysis
SUSE Linux Enterprise 15 Module for Basesystem kernel-source Not affected
SUSE Linux Enterprise 15 Module for Development Tools kernel-source Not affected
SUSE Linux Enterprise 15-SP1 Module for Basesystem kernel-source Not affected
SUSE Linux Enterprise 15-SP1 Module for Development Tools kernel-source Not affected
SUSE Linux Enterprise 15-SP2 Module for Basesystem kernel-source Analysis
SUSE Linux Enterprise 15-SP2 Module for Development Tools kernel-source Analysis
SUSE Linux Enterprise Desktop 11 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP1 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP2 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 11 SP4 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP1 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP3 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP4 kernel-source Analysis
SUSE Linux Enterprise Desktop 12 SP5 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 12 SP2 kernel-source Analysis
SUSE Linux Enterprise High Performance Computing 12 SP4 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 kernel-source Not affected
SUSE Linux Enterprise High Performance Computing 15 LTSS kernel-source Analysis
SUSE Linux Enterprise Point of Service 11 SP3 kernel-source Analysis
SUSE Linux Enterprise Point of Service Image Server 12 kernel-source Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP1 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2 kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 BCL kernel-source Not affected
SUSE Linux Enterprise Server 12 SP2 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP2 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3 BCL kernel-source Not affected
SUSE Linux Enterprise Server 12 SP3 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP3 LTSS kernel-source Not affected
SUSE Linux Enterprise Server 12 SP4 kernel-source Not affected
SUSE Linux Enterprise Server 12 SP4 ESPOS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP4 LTSS kernel-source Analysis
SUSE Linux Enterprise Server 12 SP5 kernel-source Not affected
SUSE Linux Enterprise Server 15 LTSS kernel-source Analysis
SUSE Linux Enterprise Server ESPOS 15 kernel-source Analysis
SUSE Linux Enterprise Server for SAP Applications 12 SP2 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 kernel-source Not affected
SUSE Linux Enterprise Server for SAP Applications 15 kernel-source Analysis
SUSE OpenStack Cloud 7 kernel-source Analysis
SUSE OpenStack Cloud 8 kernel-source Analysis
SUSE OpenStack Cloud 9 kernel-source Analysis
SUSE OpenStack Cloud Crowbar 8 kernel-source Analysis
SUSE OpenStack Cloud Crowbar 9 kernel-source Analysis