Uninitialized Pointer Flaw in X.Org and Xwayland
CVE-2025-26599

7.8HIGH

Key Information:

Vendor
Red Hat
Status
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
25 February 2025

Summary

An uninitialized pointer vulnerability has been identified in X.Org and Xwayland that arises in the compCheckRedirect() function. If this function fails to allocate the backing pixmap, it can lead to a BadAlloc error when compRedirectWindow() is called. This error occurs without proper validation of the window tree marked just prior, resulting in a state where validated data remains only partially initialized. Consequently, this can lead to potential stability issues and unexpected behavior within the graphics system.

References

https://access.redhat.com/security/cve/CVE-2025-26599
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2345253
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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