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openSUSE-SU-2026:21283-1 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceopenSUSE-SU-2026:21283-1

openSUSE-SU-2026:21283-1

HIGH7.0

Security update for xwayland

Published Jul 10, 2026

Modified 3 months ago

Fix available

Details

Description of the patch:

This update for xwayland fixes the following issues

CVE-2026-55999: missing bounds check in glamor_font_get can lead to a heap buffer overflow when a font loaded from a malicious PCF file is processed (bsc#1268893).
CVE-2026-56000: improper memory management in CommonMakeCurrent can lead to a heap use-after-free when an interaction with a malicious client creating GLX contexts happens (bsc#1268894).

Affected Packages

xwayland

openSUSE Leap 16.0

Fixed in:

24.1.6-160000.6.1

xwayland-devel

openSUSE Leap 16.0

Fixed in:

24.1.6-160000.6.1

References

https://bugzilla.suse.com/1268893

https://bugzilla.suse.com/1268894

https://www.suse.com/security/cve/CVE-2026-55999/

https://www.suse.com/security/cve/CVE-2026-56000/

https://www.suse.com/support/security/rating/

CVSS Analysis

CVSS v3.1

7.0

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7.0/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Upstream

CVE-2026-55999 CVE-2026-56000

Ecosystems

openSUSE Leap 16.0

Timeline

PublishedJul 10, 2026

ModifiedJul 10, 2026