CVE-2025-26598: Xorg: xwayland: out-of-bounds write in createpointerbarrierclient()
Description
An out-of-bounds write flaw was found in X.Org and Xwayland. The function GetBarrierDevice() searches for the pointer device based on its device ID and returns the matching value, or supposedly NULL, if no match was found. However, the code will return the last element of the list if no matching device ID is found, which can lead to out-of-bounds memory access.
Classification
CVE ID: CVE-2025-26598
Problem Types
Out-of-bounds WriteAffected Products
Vendor: Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat, Red Hat
Product: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.54% (scored less or equal to compared to others)
EPSS Date: 2025-03-26 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-26598https://access.redhat.com/security/cve/CVE-2025-26598
https://bugzilla.redhat.com/show_bug.cgi?id=2345254