CVE-2024-53157

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> firmware: arm_scpi: Check the DVFS OPP count returned by the firmware<br /> <br /> Fix a kernel crash with the below call trace when the SCPI firmware<br /> returns OPP count of zero.<br /> <br /> dvfs_info.opp_count may be zero on some platforms during the reboot<br /> test, and the kernel will crash after dereferencing the pointer to<br /> kcalloc(info-&gt;count, sizeof(*opp), GFP_KERNEL).<br /> <br /> | Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028<br /> | Mem abort info:<br /> | ESR = 0x96000004<br /> | Exception class = DABT (current EL), IL = 32 bits<br /> | SET = 0, FnV = 0<br /> | EA = 0, S1PTW = 0<br /> | Data abort info:<br /> | ISV = 0, ISS = 0x00000004<br /> | CM = 0, WnR = 0<br /> | user pgtable: 4k pages, 48-bit VAs, pgdp = 00000000faefa08c<br /> | [0000000000000028] pgd=0000000000000000<br /> | Internal error: Oops: 96000004 [#1] SMP<br /> | scpi-hwmon: probe of PHYT000D:00 failed with error -110<br /> | Process systemd-udevd (pid: 1701, stack limit = 0x00000000aaede86c)<br /> | CPU: 2 PID: 1701 Comm: systemd-udevd Not tainted 4.19.90+ #1<br /> | Hardware name: PHYTIUM LTD Phytium FT2000/4/Phytium FT2000/4, BIOS<br /> | pstate: 60000005 (nZCv daif -PAN -UAO)<br /> | pc : scpi_dvfs_recalc_rate+0x40/0x58 [clk_scpi]<br /> | lr : clk_register+0x438/0x720<br /> | Call trace:<br /> | scpi_dvfs_recalc_rate+0x40/0x58 [clk_scpi]<br /> | devm_clk_hw_register+0x50/0xa0<br /> | scpi_clk_ops_init.isra.2+0xa0/0x138 [clk_scpi]<br /> | scpi_clocks_probe+0x528/0x70c [clk_scpi]<br /> | platform_drv_probe+0x58/0xa8<br /> | really_probe+0x260/0x3d0<br /> | driver_probe_device+0x12c/0x148<br /> | device_driver_attach+0x74/0x98<br /> | __driver_attach+0xb4/0xe8<br /> | bus_for_each_dev+0x88/0xe0<br /> | driver_attach+0x30/0x40<br /> | bus_add_driver+0x178/0x2b0<br /> | driver_register+0x64/0x118<br /> | __platform_driver_register+0x54/0x60<br /> | scpi_clocks_driver_init+0x24/0x1000 [clk_scpi]<br /> | do_one_initcall+0x54/0x220<br /> | do_init_module+0x54/0x1c8<br /> | load_module+0x14a4/0x1668<br /> | __se_sys_finit_module+0xf8/0x110<br /> | __arm64_sys_finit_module+0x24/0x30<br /> | el0_svc_common+0x78/0x170<br /> | el0_svc_handler+0x38/0x78<br /> | el0_svc+0x8/0x340<br /> | Code: 937d7c00 a94153f3 a8c27bfd f9400421 (b8606820)<br /> | ---[ end trace 06feb22469d89fa8 ]---<br /> | Kernel panic - not syncing: Fatal exception<br /> | SMP: stopping secondary CPUs<br /> | Kernel Offset: disabled<br /> | CPU features: 0x10,a0002008<br /> | Memory Limit: none