{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "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": "409444522976",
                     "lessThan": "e51ff3ffc316",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "409444522976",
                     "lessThan": "47d8de3c2265",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "409444522976",
                     "lessThan": "4d8f9065830e",
                     "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": "custom"
                  },
                  {
                     "version": "5.10.64",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.11.16",
                     "lessThanOrEqual": "5.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.12",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "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-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2021-46913",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}