CVE-2021-46913

In the Linux kernel, the following vulnerability has been resolved:
netfilter: nftables: clone set element expression template memcpy() breaks
when using connlimit in set elements. Use nft_expr_clone() to initialize
the connlimit expression list, otherwise connlimit garbage collector
crashes when walking on the list head copy. [ 493.064656] Workqueue:
events_power_efficient nft_rhash_gc [nf_tables] [ 493.064685] RIP:
0010:find_or_evict+0x5a/0x90 [nf_conncount] [ 493.064694] Code: 2b 43 40 83
f8 01 77 0d 48 c7 c0 f5 ff ff ff 44 39 63 3c 75 df 83 6d 18 01 48 8b 43 08
48 89 de 48 8b 13 48 8b 3d ee 2f 00 00 <48> 89 42 08 48 89 10 48 b8 00 01
00 00 00 00 ad de 48 89 03 48 83 [ 493.064699] RSP: 0018:ffffc90000417dc0
EFLAGS: 00010297 [ 493.064704] RAX: 0000000000000000 RBX: ffff888134f38410
RCX: 0000000000000000 [ 493.064708] RDX: 0000000000000000 RSI:
ffff888134f38410 RDI: ffff888100060cc0 [ 493.064711] RBP: ffff88812ce594a8
R08: ffff888134f38438 R09: 00000000ebb9025c [ 493.064714] R10:
ffffffff8219f838 R11: 0000000000000017 R12: 0000000000000001 [ 493.064718]
R13: ffffffff82146740 R14: ffff888134f38410 R15: 0000000000000000 [
493.064721] FS: 0000000000000000(0000) GS:ffff88840e440000(0000)
knlGS:0000000000000000 [ 493.064725] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033 [ 493.064729] CR2: 0000000000000008 CR3: 00000001330aa002
CR4: 00000000001706e0 [ 493.064733] Call Trace: [ 493.064737]
nf_conncount_gc_list+0x8f/0x150 [nf_conncount] [ 493.064746]
nft_rhash_gc+0x106/0x390 [nf_tables]