CVE-2025-26601

Summary

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.

Affected Software

VendorProductVersion RangeStatus
0 < 21.1.16affected
22.0.0 < 24.1.6affected
Red HatRed Hat Enterprise Linux 100:24.1.5-3.el10_0 < *unaffected
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION0:1.1.0-25.el6_10 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:1.8.0-36.el7_9 < *unaffected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Support0:1.20.4-30.el7_9 < *unaffected
Red HatRed Hat Enterprise Linux 80:1.13.1-15.el8_10 < *unaffected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support0:1.9.0-15.el8_2.13 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support0:1.11.0-8.el8_4.12 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update Service0:1.11.0-8.el8_4.12 < *unaffected
Red HatRed Hat Enterprise Linux 8.4 Update Services for SAP Solutions0:1.11.0-8.el8_4.12 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support0:1.12.0-6.el8_6.13 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service0:1.12.0-6.el8_6.13 < *unaffected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions0:1.12.0-6.el8_6.13 < *unaffected
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support0:1.12.0-15.el8_8.12 < *unaffected
Red HatRed Hat Enterprise Linux 90:1.14.1-1.el9_5.1 < *unaffected
Red HatRed Hat Enterprise Linux 90:1.20.11-28.el9_6 < *unaffected
Red HatRed Hat Enterprise Linux 90:23.2.7-3.el9_6 < *unaffected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions0:1.11.0-22.el9_0.13 < *unaffected
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support0:1.12.0-14.el9_2.10 < *unaffected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support0:1.13.1-8.el9_4.5 < *unaffected

Weaknesses

  • CWE-416: Use After Free

Workarounds

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

CVE Program Container

Additional References

References