[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2021-47387":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T08:53:30.047Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":19,"aliases":20,"duplicate_of":9,"upstream":21,"downstream":22,"duplicates":47,"related":48,"reserved_at":9,"published_at":59,"modified_at":60,"state":61,"summary":62,"references_raw":71,"kevs":102,"epss":103,"epss_history":106,"metrics":330,"affected":336},"CVE-2021-47387","In the Linux kernel, the following vulnerability has been resolved:\n\ncpufreq: schedutil: Use kobject release() method to free sugov_tunables\n\nThe struct sugov_tunables is protected by the kobject, so we can't free\nit directly. Otherwise we would get a call trace like this:\n  ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x30\n  WARNING: CPU: 3 PID: 720 at lib/debugobjects.c:505 debug_print_object+0xb8/0x100\n  Modules linked in:\n  CPU: 3 PID: 720 Comm: a.sh Tainted: G        W         5.14.0-rc1-next-20210715-yocto-standard+ #507\n  Hardware name: Marvell OcteonTX CN96XX board (DT)\n  pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--)\n  pc : debug_print_object+0xb8/0x100\n  lr : debug_print_object+0xb8/0x100\n  sp : ffff80001ecaf910\n  x29: ffff80001ecaf910 x28: ffff00011b10b8d0 x27: ffff800011043d80\n  x26: ffff00011a8f0000 x25: ffff800013cb3ff0 x24: 0000000000000000\n  x23: ffff80001142aa68 x22: ffff800011043d80 x21: ffff00010de46f20\n  x20: ffff800013c0c520 x19: ffff800011d8f5b0 x18: 0000000000000010\n  x17: 6e6968207473696c x16: 5f72656d6974203a x15: 6570797420746365\n  x14: 6a626f2029302065 x13: 303378302f307830 x12: 2b6e665f72656d69\n  x11: ffff8000124b1560 x10: ffff800012331520 x9 : ffff8000100ca6b0\n  x8 : 000000000017ffe8 x7 : c0000000fffeffff x6 : 0000000000000001\n  x5 : ffff800011d8c000 x4 : ffff800011d8c740 x3 : 0000000000000000\n  x2 : ffff0001108301c0 x1 : ab3c90eedf9c0f00 x0 : 0000000000000000\n  Call trace:\n   debug_print_object+0xb8/0x100\n   __debug_check_no_obj_freed+0x1c0/0x230\n   debug_check_no_obj_freed+0x20/0x88\n   slab_free_freelist_hook+0x154/0x1c8\n   kfree+0x114/0x5d0\n   sugov_exit+0xbc/0xc0\n   cpufreq_exit_governor+0x44/0x90\n   cpufreq_set_policy+0x268/0x4a8\n   store_scaling_governor+0xe0/0x128\n   store+0xc0/0xf0\n   sysfs_kf_write+0x54/0x80\n   kernfs_fop_write_iter+0x128/0x1c0\n   new_sync_write+0xf0/0x190\n   vfs_write+0x2d4/0x478\n   ksys_write+0x74/0x100\n   __arm64_sys_write+0x24/0x30\n   invoke_syscall.constprop.0+0x54/0xe0\n   do_el0_svc+0x64/0x158\n   el0_svc+0x2c/0xb0\n   el0t_64_sync_handler+0xb0/0xb8\n   el0t_64_sync+0x198/0x19c\n  irq event stamp: 5518\n  hardirqs last  enabled at (5517): [\u003Cffff8000100cbd7c>] console_unlock+0x554/0x6c8\n  hardirqs last disabled at (5518): [\u003Cffff800010fc0638>] el1_dbg+0x28/0xa0\n  softirqs last  enabled at (5504): [\u003Cffff8000100106e0>] __do_softirq+0x4d0/0x6c0\n  softirqs last disabled at (5483): [\u003Cffff800010049548>] irq_exit+0x1b0/0x1b8\n\nSo split the original sugov_tunables_free() into two functions,\nsugov_clear_global_tunables() is just used to clear the global_tunables\nand the new sugov_tunables_free() is used as kobj_type::release to\nrelease the sugov_tunables safely.",null,[11],{"_key":12,"id":12,"name":13,"description":14,"type":15,"status":16,"abstraction":17,"likelihood_of_exploit":9,"capec":18},"CWE-763","Release of Invalid Pointer or Reference","The product attempts to return a memory resource to the system, but it calls the wrong release function or calls the appropriate release function 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