Microsoft security update for CVE-2025-26601
🔗 CVE IDs covered (1)
📋 Microsoft's advisory
EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26601. This page also shows what EchelonGraph holds for CVE-2025-26601, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.
🎯 Affected products4
- azl3 xorg-x11-server-Xwayland 24.1.1-3 on Azure Linux 3.0
- azl3 xorg-x11-server-Xwayland 24.1.6-1 on Azure Linux 3.0
- cbl2 xorg-x11-server 1.20.10-15 on CBL Mariner 2.0
- cbl2 xorg-x11-server 1.20.10-15 on CBL-Mariner 2.0
✅ Updates Microsoft lists: 2 updates
2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.
| KB article | Update | Fixed build |
|---|---|---|
| — | Security Update | 24.1.6-1 |
| — | Security Update | 1.20.10-15 |
🧭 EchelonGraph on CVE-2025-26601
- EchelonGraph score
- 7.8 HIGH
- CISA KEV
- Not listed
- Fix status
- A fix is available — apply it.
Description from the CVE record (CVE.org), as published by its numbering authority
A use-after-free flaw was found in X.Org and Xwayland. When changing an alarm, the values of the change mask are evaluated one after the other, changing the trigger values as requested, and eventually, SyncInitTrigger() is called. If one of the changes triggers an error, the function will return early, not adding the new sync object, possibly causing a use-after-free when the alarm eventually triggers.
Published by Red Hat, Inc., the CVE Numbering Authority that assigned CVE-2025-26601, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).