Upstream information

CVE-2021-3782 at MITRE

Description

An internal reference count is held on the buffer pool, incremented every time a new buffer is created from the pool. The reference count is maintained as an int; on LP64 systems this can cause the reference count to overflow if the client creates a large number of wl_shm buffer objects, or if it can coerce the server to create a large number of external references to the buffer storage. With the reference count overflowing, a use-after-free can be constructed on the wl_shm_pool tracking structure, where values may be incremented or decremented; it may also be possible to construct a limited oracle to leak 4 bytes of server-side memory to the attacking client at a time.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 9.8 7.8
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network Local
Attack Complexity Low Low
Privileges Required None 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: 1190486 [NEW]

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Please note that this evaluation state might be work in progress, incomplete or outdated.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. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Enterprise Storage 7 wayland Affected
SUSE Enterprise Storage 7.1 wayland Affected
SUSE Linux Enterprise Desktop 15 SP4 wayland Affected
SUSE Linux Enterprise High Performance Computing 12 SP5 wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 wayland Affected
SUSE Linux Enterprise Micro 5.2 wayland Affected
SUSE Linux Enterprise Micro 5.3 wayland Affected
SUSE Linux Enterprise Micro 5.4 wayland Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 wayland Affected
SUSE Linux Enterprise Real Time 15 SP3 wayland Affected
SUSE Linux Enterprise Server 12 SP5 wayland Affected
SUSE Linux Enterprise Server 15 SP4 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 wayland Affected
SUSE Linux Enterprise Software Development Kit 12 SP5 wayland Affected
SUSE Manager Proxy 4.2 wayland Affected
SUSE Manager Proxy 4.3 wayland Affected
SUSE Manager Retail Branch Server 4.2 wayland Affected
SUSE Manager Retail Branch Server 4.3 wayland Affected
SUSE Manager Server 4.2 wayland Affected
SUSE Manager Server 4.3 wayland Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS wayland Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS wayland Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS wayland Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS wayland Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 wayland Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 wayland Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 wayland Affected
SUSE Linux Enterprise Server 12 SP4 wayland Affected
SUSE Linux Enterprise Server 15 SP1 wayland Affected
SUSE Linux Enterprise Server 15 SP1-LTSS wayland Affected
SUSE Linux Enterprise Server 15 SP2 wayland Affected
SUSE Linux Enterprise Server 15 SP2-LTSS wayland Affected
SUSE Linux Enterprise Server 15 SP3 wayland Affected
SUSE Linux Enterprise Server 15 SP3-LTSS wayland Affected
SUSE Linux Enterprise Server 15-ESPOS wayland Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 wayland Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 wayland Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP3 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 wayland Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 wayland Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 4.0 wayland Affected
SUSE CaaS Platform 4.5 wayland Affected
SUSE Enterprise Storage 6 wayland Affected
SUSE Linux Enterprise Desktop 12 SP3 wayland Affected
SUSE Linux Enterprise Desktop 12 SP4 wayland Affected
SUSE Linux Enterprise Desktop 15 wayland Affected
SUSE Linux Enterprise Desktop 15 SP1 wayland Affected
SUSE Linux Enterprise Desktop 15 SP2 wayland Affected
SUSE Linux Enterprise Desktop 15 SP3 wayland Affected
SUSE Linux Enterprise Micro 5.0 wayland Affected
SUSE Linux Enterprise Module for Basesystem 15 wayland Affected
SUSE Linux Enterprise Real Time 15 SP2 wayland Affected
SUSE Linux Enterprise Server 12 SP3 wayland Affected
SUSE Linux Enterprise Server 15 wayland Affected
SUSE Linux Enterprise Server 15 SP1-BCL wayland Affected
SUSE Linux Enterprise Server 15 SP2-BCL wayland Affected
SUSE Linux Enterprise Server 15 SP3-BCL wayland Affected
SUSE Linux Enterprise Server 15-LTSS wayland Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 wayland Affected
SUSE Linux Enterprise Software Development Kit 12 SP3 wayland Affected
SUSE Linux Enterprise Software Development Kit 12 SP4 wayland Affected
SUSE Manager Proxy 4.0 wayland Affected
SUSE Manager Proxy 4.1 wayland Affected
SUSE Manager Retail Branch Server 4.0 wayland Affected
SUSE Manager Retail Branch Server 4.1 wayland Affected
SUSE Manager Server 4.0 wayland Affected
SUSE Manager Server 4.1 wayland Affected

SUSE Timeline for this CVE

CVE page created: Tue Sep 14 16:30:10 2021
CVE page last modified: Tue Mar 7 14:59:26 2023