[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2021-47387":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T14:53:31.930Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":30,"epss":9,"epss_history":31,"metrics":32,"affected":39},"DEBIAN-CVE-2021-47387","In the Linux kernel, the following vulnerability has been resolved:  cpufreq: schedutil: Use kobject release() method to free sugov_tunables  The struct sugov_tunables is protected by the kobject, so we can't free it directly. Otherwise we would get a call trace like this:   ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x30   WARNING: CPU: 3 PID: 720 at lib/debugobjects.c:505 debug_print_object+0xb8/0x100   Modules linked in:   CPU: 3 PID: 720 Comm: a.sh Tainted: G        W         5.14.0-rc1-next-20210715-yocto-standard+ #507   Hardware name: Marvell OcteonTX CN96XX board (DT)   pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--)   pc : debug_print_object+0xb8/0x100   lr : debug_print_object+0xb8/0x100   sp : ffff80001ecaf910   x29: ffff80001ecaf910 x28: ffff00011b10b8d0 x27: ffff800011043d80   x26: ffff00011a8f0000 x25: ffff800013cb3ff0 x24: 0000000000000000   x23: ffff80001142aa68 x22: ffff800011043d80 x21: ffff00010de46f20   x20: ffff800013c0c520 x19: ffff800011d8f5b0 x18: 0000000000000010   x17: 6e6968207473696c x16: 5f72656d6974203a x15: 6570797420746365   x14: 6a626f2029302065 x13: 303378302f307830 x12: 2b6e665f72656d69   x11: ffff8000124b1560 x10: ffff800012331520 x9 : ffff8000100ca6b0   x8 : 000000000017ffe8 x7 : c0000000fffeffff x6 : 0000000000000001   x5 : ffff800011d8c000 x4 : ffff800011d8c740 x3 : 0000000000000000   x2 : ffff0001108301c0 x1 : ab3c90eedf9c0f00 x0 : 0000000000000000   Call trace:    debug_print_object+0xb8/0x100    __debug_check_no_obj_freed+0x1c0/0x230    debug_check_no_obj_freed+0x20/0x88    slab_free_freelist_hook+0x154/0x1c8    kfree+0x114/0x5d0    sugov_exit+0xbc/0xc0    cpufreq_exit_governor+0x44/0x90    cpufreq_set_policy+0x268/0x4a8    store_scaling_governor+0xe0/0x128    store+0xc0/0xf0    sysfs_kf_write+0x54/0x80    kernfs_fop_write_iter+0x128/0x1c0    new_sync_write+0xf0/0x190    vfs_write+0x2d4/0x478    ksys_write+0x74/0x100    __arm64_sys_write+0x24/0x30    invoke_syscall.constprop.0+0x54/0xe0    do_el0_svc+0x64/0x158    el0_svc+0x2c/0xb0    el0t_64_sync_handler+0xb0/0xb8    el0t_64_sync+0x198/0x19c   irq event stamp: 5518   hardirqs last  enabled at (5517): [\u003Cffff8000100cbd7c>] console_unlock+0x554/0x6c8   hardirqs last disabled at (5518): [\u003Cffff800010fc0638>] el1_dbg+0x28/0xa0   softirqs last  enabled at (5504): [\u003Cffff8000100106e0>] __do_softirq+0x4d0/0x6c0   softirqs last disabled at (5483): [\u003Cffff800010049548>] irq_exit+0x1b0/0x1b8  So split the original sugov_tunables_free() into two functions, sugov_clear_global_tunables() is just used to clear the global_tunables and the new sugov_tunables_free() is used as kobj_type::release to release the sugov_tunables safely.",null,[],[],[],[14],{"_key":15},"CVE-2021-47387",[],[],[],"2024-05-21T15:15:24.183Z","2026-04-28T20:23:27.223406Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24],{"url":25,"sources":26,"tags":28},"https://security-tracker.debian.org/tracker/CVE-2021-47387",[27],"osv_debian",[29],"Advisory",[],[],[33],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":34,"cvss_v4_0":9},{"baseScore":35,"baseSeverity":9,"vectorString":36,"impactScore":37,"exploitabilityScore":38},5.5,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",6,4.6,[40],{"ecosystem":41,"name":42,"vendor":43,"product":42,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":42,"source":9,"versions":45},"Debian","linux","debian","deb",[46,52,55,56],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":50,"version_end_type":51,"fixed_in":9},"lt5_10_84_1",true,"ecosystem","5.10.84-1","excluding",{"version":53,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":51,"fixed_in":9},"lt5_14_12_1","5.14.12-1",{"version":53,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":51,"fixed_in":9},{"version":53,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":51,"fixed_in":9}]