A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.
| Software | From | Fixed in |
|---|---|---|
| redhat / enterprise_linux | 7.0 | 7.0.x |
| redhat / enterprise_linux | 8.0 | 8.0.x |
| redhat / enterprise_linux | 9.0 | 9.0.x |
| x.org / x_server | - | 21.1.16 |
| x.org / xwayland | - | 24.1.6 |