Bug 2026072 (CVE-2021-4009) - CVE-2021-4009 xorg-x11-server: SProcXFixesCreatePointerBarrier out-of-bounds access
Summary: CVE-2021-4009 xorg-x11-server: SProcXFixesCreatePointerBarrier out-of-bounds ...
Alias: CVE-2021-4009
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2030170 2030171 2030172 2032943 2038068 2038070
Blocks: 2026049 2026076
TreeView+ depends on / blocked
Reported: 2021-11-23 17:32 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-05-17 10:00 UTC (History)
11 users (show)

Fixed In Version: xorg-x11-server 21.1.2, xorg-x11-server 1.20.14
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in xorg-x11-server. An out-of-bounds access can occur in the SProcXFixesCreatePointerBarrier function.
Clone Of:
Last Closed: 2022-01-03 11:11:12 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2022:0003 0 None None None 2022-01-03 10:21:46 UTC
Red Hat Product Errata RHSA-2022:1917 0 None None None 2022-05-10 14:18:10 UTC

Description Guilherme de Almeida Suckevicz 2021-11-23 17:32:04 UTC
As per upstream:

The handler for the CreatePointerBarrier request of the XFixes extension does not properly validate the request length leading to out of bounds memory write.

Comment 2 Guilherme de Almeida Suckevicz 2021-12-15 14:21:02 UTC
Created xorg-x11-server tracking bugs for this issue:

Affects: fedora-all [bug 2032943]

Comment 3 errata-xmlrpc 2022-01-03 10:21:44 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2022:0003 https://access.redhat.com/errata/RHSA-2022:0003

Comment 4 Product Security DevOps Team 2022-01-03 11:11:09 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 5 errata-xmlrpc 2022-05-10 14:18:08 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:1917 https://access.redhat.com/errata/RHSA-2022:1917

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