An issue was discovered in the Linux kernel before 5.0.4. There is a use-after-free upon attempted read access to /proc/ioports after the ipmi_si module is removed, related to drivers/char/ipmi/ipmi_si_intf.c, drivers/char/ipmi/ipmi_si_mem_io.c, and drivers/char/ipmi/ipmi_si_port_io.c.
| Software | From | Fixed in |
|---|---|---|
| redhat / enterprise_linux_desktop | 7.0 | 7.0.x |
| redhat / enterprise_linux_workstation | 7.0 | 7.0.x |
| redhat / enterprise_linux | 7.0 | 7.0.x |
| redhat / enterprise_linux_server | 7.0 | 7.0.x |
| redhat / enterprise_linux_server_aus | 7.4 | 7.4.x |
| redhat / enterprise_linux_server_tus | 7.4 | 7.4.x |
| redhat / enterprise_linux_server_tus | 7.6 | 7.6.x |
| redhat / enterprise_linux_aus | 7.6 | 7.6.x |
| opensuse / leap | 15.1 | 15.1.x |
| linux / linux_kernel | 4.20 | 5.0.4 |
| linux / linux_kernel | 4.18 | 4.19.31 |