Bug 2540529 (CVE-2026-93543) - CVE-2026-93543 libXi: libXi: Denial of Service via out-of-bounds read in XI2 class parser
Summary: CVE-2026-93543 libXi: libXi: Denial of Service via out-of-bounds read in XI2 ...
Keywords:
Status: NEW
Alias: CVE-2026-93543
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2540643
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 17:07 UTC by OSIDB Bzimport
Modified: 2026-11-11 12:04 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:91004 0 None None None 2026-10-27 19:58:55 UTC
Red Hat Product Errata RHSA-2026:91056 0 None None None 2026-10-29 21:14:15 UTC
Red Hat Product Errata RHSA-2026:91268 0 None None None 2026-10-27 21:02:49 UTC
Red Hat Product Errata RHSA-2026:98504 0 None None None 2026-11-11 12:04:50 UTC
Red Hat Product Errata RHSA-2026:98611 0 None None None 2026-11-11 11:34:00 UTC

Description OSIDB Bzimport 2026-09-24 17:07:49 UTC 
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
Comment 1 Jon Orris 2026-10-27 19:58:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:91004 https://access.redhat.com/errata/RHSA-2026:91004
Comment 2 Jon Orris 2026-10-27 21:02:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:91268 https://access.redhat.com/errata/RHSA-2026:91268
Comment 3 Jon Orris 2026-10-29 21:14:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:91056 https://access.redhat.com/errata/RHSA-2026:91056
Comment 6 errata-xmlrpc 2026-11-11 11:33:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:98611 https://access.redhat.com/errata/RHSA-2026:98611
Comment 7 errata-xmlrpc 2026-11-11 12:04:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:98504 https://access.redhat.com/errata/RHSA-2026:98504
Note You need to log in before you can comment on or make changes to this bug.