[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2021-46972":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T08:53:30.047Z",{"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-2021-46972","In the Linux kernel, the following vulnerability has been resolved:  ovl: fix leaked dentry  Since commit 6815f479ca90 (\"ovl: use only uppermetacopy state in ovl_lookup()\"), overlayfs doesn't put temporary dentry when there is a metacopy error, which leads to dentry leaks when shutting down the related superblock:    overlayfs: refusing to follow metacopy origin for (/file0)   ...   BUG: Dentry (____ptrval____){i=3f33,n=file3}  still in use (1) [unmount of overlay overlay]   ...   WARNING: CPU: 1 PID: 432 at umount_check.cold+0x107/0x14d   CPU: 1 PID: 432 Comm: unmount-overlay Not tainted 5.12.0-rc5 #1   ...   RIP: 0010:umount_check.cold+0x107/0x14d   ...   Call Trace:    d_walk+0x28c/0x950    ? dentry_lru_isolate+0x2b0/0x2b0    ? __kasan_slab_free+0x12/0x20    do_one_tree+0x33/0x60    shrink_dcache_for_umount+0x78/0x1d0    generic_shutdown_super+0x70/0x440    kill_anon_super+0x3e/0x70    deactivate_locked_super+0xc4/0x160    deactivate_super+0xfa/0x140    cleanup_mnt+0x22e/0x370    __cleanup_mnt+0x1a/0x30    task_work_run+0x139/0x210    do_exit+0xb0c/0x2820    ? __kasan_check_read+0x1d/0x30    ? find_held_lock+0x35/0x160    ? lock_release+0x1b6/0x660    ? mm_update_next_owner+0xa20/0xa20    ? reacquire_held_locks+0x3f0/0x3f0    ? __sanitizer_cov_trace_const_cmp4+0x22/0x30    do_group_exit+0x135/0x380    __do_sys_exit_group.isra.0+0x20/0x20    __x64_sys_exit_group+0x3c/0x50    do_syscall_64+0x45/0x70    entry_SYSCALL_64_after_hwframe+0x44/0xae   ...   VFS: Busy inodes after unmount of overlay. Self-destruct in 5 seconds.  Have a nice day...  This fix has been tested with a syzkaller reproducer.",null,[],[],[],[14],{"_key":15},"CVE-2021-46972",[],[],[],"2024-02-27T19:04:07.403Z","2026-04-28T20:23:15.913975Z",{"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-2021-46972",[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",[46,52,53,54],{"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_38_1",true,"ecosystem","5.10.38-1","excluding",{"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},{"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},{"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}]