Security update for xorg-x11-server

Announcement ID: SUSE-SU-2021:4136-2
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2021-4009 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-4009 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-4010 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-4010 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-4011 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-4011 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Real Time 15 SP2

An update that solves three vulnerabilities can now be installed.

Description:

This update for xorg-x11-server fixes the following issues:

  • CVE-2021-4009: The handler for the CreatePointerBarrier request of the XFixes extension does not properly validate the request length leading to out of bounds memory write. (bsc#1190487)
  • CVE-2021-4010: The handler for the Suspend request of the Screen Saver extension does not properly validate the request length leading to out of bounds memory write. (bsc#1190488)
  • CVE-2021-4011: The handlers for the RecordCreateContext and RecordRegisterClients requests of the Record extension do not properly validate the request length leading to out of bounds memory write. (bsc#1190489)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Real Time 15 SP2
    zypper in -t patch SUSE-SLE-Product-RT-15-SP2-2022-465=1

Package List:

  • SUSE Linux Enterprise Real Time 15 SP2 (x86_64)
    • xorg-x11-server-sdk-1.20.3-22.5.42.1
    • xorg-x11-server-extra-debuginfo-1.20.3-22.5.42.1
    • xorg-x11-server-1.20.3-22.5.42.1
    • xorg-x11-server-debuginfo-1.20.3-22.5.42.1
    • xorg-x11-server-debugsource-1.20.3-22.5.42.1
    • xorg-x11-server-extra-1.20.3-22.5.42.1

References: