openSUSE Leap 16.0 xorg-x11-server Important Security Alert 2026-20896-1
opensuse
June 5, 2026
-------------------------------------------------------------
Description
This update for xorg-x11-server fixes the following issues:
- CreateSaverWindow Use-After-Free Information Disclosure. (bsc#1266301)
- DRI2 DRIGetBuffers/DRIGetBuffersWithFormat Out-Of-Bounds Write. (bsc#1266302)
- Font Alias Stack-based Buffer Overflow. (bsc#1266294)
- GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. (bsc#1266300)
- XKB Key Types Stack-based Buffer Overflow. (bsc#1266296)
- XKB SetMap Request Stack-based Buffer Overflow. (bsc#1266297)
- XSYNC Use-After-Free in FreeCounter(). (bsc#1266298)
- XSYNC Use-After-Free in miSyncDestroyFence(). (bsc#1266295)
- XSYNC Use-After-Free in SyncChangeCounter(). (bsc#1266299)
Patch instructions:
To install this openSUSE security update use the suse recommended installation methods
like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
- openSUSE Leap 16.0
zypper in -t patch openSUSE-Leap-16.0-882=1
Patch
Package List
- openSUSE Leap 16.0:
xorg-x11-server-21.1.15-160000.5.1
xorg-x11-server-Xvfb-21.1.15-160000.5.1
xorg-x11-server-extra-21.1.15-160000.5.1
xorg-x11-server-sdk-21.1.15-160000.5.1
xorg-x11-server-source-21.1.15-160000.5.1
xorg-x11-server-wrapper-21.1.15-160000.5.1
References
* bsc#1266294
* bsc#1266295
* bsc#1266296
* bsc#1266297
* bsc#1266298
* bsc#1266299
* bsc#1266300
* bsc#1266301
* bsc#1266302
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: openSUSE-SU-2026:20896-1
Rating: important
Affected Products:
openSUSE Leap 16.0
An update that has 9 bug fixes can now be installed.
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