An access to an uninitialized pointer flaw was found in X.Org and Xwayland. The function compCheckRedirect() may fail if it cannot allocate the backing pixmap. In that case, compRedirectWindow() will return a BadAlloc error without validating the window tree marked just before, which leaves the validated data partly initialized and the use of an uninitialized pointer later. CREATE(Triage):(User=admin) CVE-2025-26599 (https://nvd.nist.gov/vuln/detail/CVE-2025-26599)
