CVE-2022-49483

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/msm/disp/dpu1: avoid clearing hw interrupts if hw_intr is null during drm uninit<br /> <br /> If edp modeset init is failed due to panel being not ready and<br /> probe defers during drm bind, avoid clearing irqs and dereference<br /> hw_intr when hw_intr is null.<br /> <br /> BUG: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000<br /> <br /> Call trace:<br /> dpu_core_irq_uninstall+0x50/0xb0<br /> dpu_irq_uninstall+0x18/0x24<br /> msm_drm_uninit+0xd8/0x16c<br /> msm_drm_bind+0x580/0x5fc<br /> try_to_bring_up_master+0x168/0x1c0<br /> __component_add+0xb4/0x178<br /> component_add+0x1c/0x28<br /> dp_display_probe+0x38c/0x400<br /> platform_probe+0xb0/0xd0<br /> really_probe+0xcc/0x2c8<br /> __driver_probe_device+0xbc/0xe8<br /> driver_probe_device+0x48/0xf0<br /> __device_attach_driver+0xa0/0xc8<br /> bus_for_each_drv+0x8c/0xd8<br /> __device_attach+0xc4/0x150<br /> device_initial_probe+0x1c/0x28<br /> <br /> Changes in V2:<br /> - Update commit message and coreect fixes tag.<br /> <br /> Patchwork: https://patchwork.freedesktop.org/patch/484430/