{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-46913","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-25T13:45:52.718Z","datePublished":"2024-02-27T06:53:52.780Z","dateUpdated":"2025-05-04T07:00:14.073Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T07:00:14.073Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nftables: clone set element expression template\n\nmemcpy() breaks when using connlimit in set elements. Use\nnft_expr_clone() to initialize the connlimit expression list, otherwise\nconnlimit garbage collector crashes when walking on the list head copy.\n\n[  493.064656] Workqueue: events_power_efficient nft_rhash_gc [nf_tables]\n[  493.064685] RIP: 0010:find_or_evict+0x5a/0x90 [nf_conncount]\n[  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\n[  493.064699] RSP: 0018:ffffc90000417dc0 EFLAGS: 00010297\n[  493.064704] RAX: 0000000000000000 RBX: ffff888134f38410 RCX: 0000000000000000\n[  493.064708] RDX: 0000000000000000 RSI: ffff888134f38410 RDI: ffff888100060cc0\n[  493.064711] RBP: ffff88812ce594a8 R08: ffff888134f38438 R09: 00000000ebb9025c\n[  493.064714] R10: ffffffff8219f838 R11: 0000000000000017 R12: 0000000000000001\n[  493.064718] R13: ffffffff82146740 R14: ffff888134f38410 R15: 0000000000000000\n[  493.064721] FS:  0000000000000000(0000) GS:ffff88840e440000(0000) knlGS:0000000000000000\n[  493.064725] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  493.064729] CR2: 0000000000000008 CR3: 00000001330aa002 CR4: 00000000001706e0\n[  493.064733] Call Trace:\n[  493.064737]  nf_conncount_gc_list+0x8f/0x150 [nf_conncount]\n[  493.064746]  nft_rhash_gc+0x106/0x390 [nf_tables]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"],"versions":[{"version":"4094445229760d0d31a4190dfe88fe815c9fc34e","lessThan":"e51ff3ffc316377cca21de8b80404eed0c37b3c3","status":"affected","versionType":"git"},{"version":"4094445229760d0d31a4190dfe88fe815c9fc34e","lessThan":"47d8de3c226574a3ddb8b87d0c152028d1bafef4","status":"affected","versionType":"git"},{"version":"4094445229760d0d31a4190dfe88fe815c9fc34e","lessThan":"4d8f9065830e526c83199186c5f56a6514f457d2","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/netfilter/nf_tables_api.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.64","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.11.16","lessThanOrEqual":"5.11.*","status":"unaffected","versionType":"semver"},{"version":"5.12","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.11.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.12"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/e51ff3ffc316377cca21de8b80404eed0c37b3c3"},{"url":"https://git.kernel.org/stable/c/47d8de3c226574a3ddb8b87d0c152028d1bafef4"},{"url":"https://git.kernel.org/stable/c/4d8f9065830e526c83199186c5f56a6514f457d2"}],"title":"netfilter: nftables: clone set element expression template","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-25T16:05:03.441249Z","id":"CVE-2021-46913","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-07-25T16:05:13.419Z"}},{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T05:17:42.990Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/e51ff3ffc316377cca21de8b80404eed0c37b3c3","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/47d8de3c226574a3ddb8b87d0c152028d1bafef4","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/4d8f9065830e526c83199186c5f56a6514f457d2","tags":["x_transferred"]}]}]}}