CVE-2024-50156

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/msm: Avoid NULL dereference in msm_disp_state_print_regs()<br /> <br /> If the allocation in msm_disp_state_dump_regs() failed then<br /> `block-&gt;state` can be NULL. The msm_disp_state_print_regs() function<br /> _does_ have code to try to handle it with:<br /> <br /> if (*reg)<br /> dump_addr = *reg;<br /> <br /> ...but since "dump_addr" is initialized to NULL the above is actually<br /> a noop. The code then goes on to dereference `dump_addr`.<br /> <br /> Make the function print "Registers not stored" when it sees a NULL to<br /> solve this. Since we&amp;#39;re touching the code, fix<br /> msm_disp_state_print_regs() not to pointlessly take a double-pointer<br /> and properly mark the pointer as `const`.<br /> <br /> Patchwork: https://patchwork.freedesktop.org/patch/619657/