[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2021-47247":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-04T02:53:27.892Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":19,"related":20,"reserved_at":9,"published_at":21,"modified_at":22,"state":9,"summary":23,"references_raw":25,"kevs":32,"epss":9,"epss_history":33,"metrics":34,"affected":41},"DEBIAN-CVE-2021-47247","In the Linux kernel, the following vulnerability has been resolved:  net/mlx5e: Fix use-after-free of encap entry in neigh update handler  Function mlx5e_rep_neigh_update() wasn't updated to accommodate rtnl lock removal from TC filter update path and properly handle concurrent encap entry insertion/deletion which can lead to following use-after-free:   [23827.464923] ==================================================================  [23827.469446] BUG: KASAN: use-after-free in mlx5e_encap_take+0x72/0x140 [mlx5_core]  [23827.470971] Read of size 4 at addr ffff8881d132228c by task kworker/u20:6/21635  [23827.472251]  [23827.472615] CPU: 9 PID: 21635 Comm: kworker/u20:6 Not tainted 5.13.0-rc3+ #5  [23827.473788] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014  [23827.475639] Workqueue: mlx5e mlx5e_rep_neigh_update [mlx5_core]  [23827.476731] Call Trace:  [23827.477260]  dump_stack+0xbb/0x107  [23827.477906]  print_address_description.constprop.0+0x18/0x140  [23827.478896]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]  [23827.479879]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]  [23827.480905]  kasan_report.cold+0x7c/0xd8  [23827.481701]  ? mlx5e_encap_take+0x72/0x140 [mlx5_core]  [23827.482744]  kasan_check_range+0x145/0x1a0  [23827.493112]  mlx5e_encap_take+0x72/0x140 [mlx5_core]  [23827.494054]  ? mlx5e_tc_tun_encap_info_equal_generic+0x140/0x140 [mlx5_core]  [23827.495296]  mlx5e_rep_neigh_update+0x41e/0x5e0 [mlx5_core]  [23827.496338]  ? mlx5e_rep_neigh_entry_release+0xb80/0xb80 [mlx5_core]  [23827.497486]  ? read_word_at_a_time+0xe/0x20  [23827.498250]  ? strscpy+0xa0/0x2a0  [23827.498889]  process_one_work+0x8ac/0x14e0  [23827.499638]  ? lockdep_hardirqs_on_prepare+0x400/0x400  [23827.500537]  ? pwq_dec_nr_in_flight+0x2c0/0x2c0  [23827.501359]  ? rwlock_bug.part.0+0x90/0x90  [23827.502116]  worker_thread+0x53b/0x1220  [23827.502831]  ? process_one_work+0x14e0/0x14e0  [23827.503627]  kthread+0x328/0x3f0  [23827.504254]  ? _raw_spin_unlock_irq+0x24/0x40  [23827.505065]  ? __kthread_bind_mask+0x90/0x90  [23827.505912]  ret_from_fork+0x1f/0x30  [23827.506621]  [23827.506987] Allocated by task 28248:  [23827.507694]  kasan_save_stack+0x1b/0x40  [23827.508476]  __kasan_kmalloc+0x7c/0x90  [23827.509197]  mlx5e_attach_encap+0xde1/0x1d40 [mlx5_core]  [23827.510194]  mlx5e_tc_add_fdb_flow+0x397/0xc40 [mlx5_core]  [23827.511218]  __mlx5e_add_fdb_flow+0x519/0xb30 [mlx5_core]  [23827.512234]  mlx5e_configure_flower+0x191c/0x4870 [mlx5_core]  [23827.513298]  tc_setup_cb_add+0x1d5/0x420  [23827.514023]  fl_hw_replace_filter+0x382/0x6a0 [cls_flower]  [23827.514975]  fl_change+0x2ceb/0x4a51 [cls_flower]  [23827.515821]  tc_new_tfilter+0x89a/0x2070  [23827.516548]  rtnetlink_rcv_msg+0x644/0x8c0  [23827.517300]  netlink_rcv_skb+0x11d/0x340  [23827.518021]  netlink_unicast+0x42b/0x700  [23827.518742]  netlink_sendmsg+0x743/0xc20  [23827.519467]  sock_sendmsg+0xb2/0xe0  [23827.520131]  ____sys_sendmsg+0x590/0x770  [23827.520851]  ___sys_sendmsg+0xd8/0x160  [23827.521552]  __sys_sendmsg+0xb7/0x140  [23827.522238]  do_syscall_64+0x3a/0x70  [23827.522907]  entry_SYSCALL_64_after_hwframe+0x44/0xae  [23827.523797]  [23827.524163] Freed by task 25948:  [23827.524780]  kasan_save_stack+0x1b/0x40  [23827.525488]  kasan_set_track+0x1c/0x30  [23827.526187]  kasan_set_free_info+0x20/0x30  [23827.526968]  __kasan_slab_free+0xed/0x130  [23827.527709]  slab_free_freelist_hook+0xcf/0x1d0  [23827.528528]  kmem_cache_free_bulk+0x33a/0x6e0  [23827.529317]  kfree_rcu_work+0x55f/0xb70  [23827.530024]  process_one_work+0x8ac/0x14e0  [23827.530770]  worker_thread+0x53b/0x1220  [23827.531480]  kthread+0x328/0x3f0  [23827.532114]  ret_from_fork+0x1f/0x30  [23827.532785]  [23827.533147] Last potentially related work creation:  [23827.534007]  kasan_save_stack+0x1b/0x40  [23827.534710]  kasan_record_aux_stack+0xab/0xc0  [23827.535492]  kvfree_call_rcu+0x31/0x7b0  [23827.536206]  mlx5e_tc_del ---truncated---",null,[],[],[],[14],{"_key":15},"CVE-2021-47247",[17],{"_key":18},"DLA-4178-1",[],[],"2024-05-21T15:15:13.703Z","2026-04-28T20:23:23.918011Z",{"cisa_kev":24,"cisa_ransomware":24,"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,[26],{"url":27,"sources":28,"tags":30},"https://security-tracker.debian.org/tracker/CVE-2021-47247",[29],"osv_debian",[31],"Advisory",[],[],[35],{"source":29,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":36,"cvss_v4_0":9},{"baseScore":37,"baseSeverity":9,"vectorString":38,"impactScore":39,"exploitabilityScore":40},7.8,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",9.8,4.6,[42],{"ecosystem":43,"name":44,"vendor":45,"product":44,"cpe_part":9,"purl_type":46,"purl_namespace":45,"purl_name":44,"source":9,"versions":47},"Debian","linux","debian","deb",[48,54,57,58],{"version":49,"is_range":50,"range_type":51,"version_start":9,"version_start_type":9,"version_end":52,"version_end_type":53,"fixed_in":9},"lt5_10_237_1",true,"ecosystem","5.10.237-1","excluding",{"version":55,"is_range":50,"range_type":51,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9},"lt5_14_6_1","5.14.6-1",{"version":55,"is_range":50,"range_type":51,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9},{"version":55,"is_range":50,"range_type":51,"version_start":9,"version_start_type":9,"version_end":56,"version_end_type":53,"fixed_in":9}]