Moderate: xorg-x11-server and xorg-x11-server-Xwayland security update

Related Vulnerabilities: CVE-2021-4008   CVE-2021-4009   CVE-2021-4010   CVE-2021-4011  

Synopsis

Moderate: xorg-x11-server and xorg-x11-server-Xwayland security update

Type/Severity

Security Advisory: Moderate

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Topic

An update for xorg-x11-server and xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon.

Xwayland is an X server for running X clients under Wayland.

The following packages have been upgraded to a later upstream version: xorg-x11-server-Xwayland (21.1.3). (BZ#2015842)

Security Fix(es):

  • xorg-x11-server: SProcRenderCompositeGlyphs out-of-bounds access (CVE-2021-4008)
  • xorg-x11-server: SProcXFixesCreatePointerBarrier out-of-bounds access (CVE-2021-4009)
  • xorg-x11-server: SProcScreenSaverSuspend out-of-bounds access (CVE-2021-4010)
  • xorg-x11-server: SwapCreateRegister out-of-bounds access (CVE-2021-4011)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 8 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
  • Red Hat Enterprise Linux Server - AUS 8.6 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
  • Red Hat Enterprise Linux for Power, little endian 8 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
  • Red Hat Enterprise Linux Server - TUS 8.6 x86_64
  • Red Hat Enterprise Linux for ARM 64 8 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
  • Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions 8.6 x86_64
  • Red Hat CodeReady Linux Builder for x86_64 8 x86_64
  • Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
  • Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
  • Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
  • Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.6 x86_64
  • Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.6 ppc64le
  • Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 8.6 s390x
  • Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.6 aarch64

Fixes

  • BZ - 2015842 - Rebase Xwayland in el8 to include fixes for NVIDIA driver 495 series
  • BZ - 2026059 - CVE-2021-4008 xorg-x11-server: SProcRenderCompositeGlyphs out-of-bounds access
  • BZ - 2026072 - CVE-2021-4009 xorg-x11-server: SProcXFixesCreatePointerBarrier out-of-bounds access
  • BZ - 2026073 - CVE-2021-4010 xorg-x11-server: SProcScreenSaverSuspend out-of-bounds access
  • BZ - 2026074 - CVE-2021-4011 xorg-x11-server: SwapCreateRegister out-of-bounds access
  • BZ - 2046329 - Xorg crashes with NVIDIA closed source driver in Present code