{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-47106"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()\n\nWe need to use list_for_each_entry_safe() iterator\nbecause we can not access @catchall after kfree_rcu() call.\n\nsyzbot reported:\n\nBUG: KASAN: use-after-free in nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\nRead of size 8 at addr ffff8880716e5b80 by task syz-executor.3/8871\n\nCPU: 1 PID: 8871 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0x8d/0x2ed mm/kasan/report.c:247\n __kasan_report mm/kasan/report.c:433 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:450\n nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\n nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\n nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\n __nft_release_table+0x79f/0xcd0 net/netfilter/nf_tables_api.c:9626\n nft_rcv_nl_event+0x4f8/0x670 net/netfilter/nf_tables_api.c:9688\n notifier_call_chain+0xb5/0x200 kernel/notifier.c:83\n blocking_notifier_call_chain kernel/notifier.c:318 [inline]\n blocking_notifier_call_chain+0x67/0x90 kernel/notifier.c:306\n netlink_release+0xcb6/0x1dd0 net/netlink/af_netlink.c:788\n __sock_release+0xcd/0x280 net/socket.c:649\n sock_close+0x18/0x20 net/socket.c:1314\n __fput+0x286/0x9f0 fs/file_table.c:280\n task_work_run+0xdd/0x1a0 kernel/task_work.c:164\n tracehook_notify_resume include/linux/tracehook.h:189 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:175 [inline]\n exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207\n __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]\n syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300\n do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f75fbf28adb\nCode: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44\nRSP: 002b:00007ffd8da7ec10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003\nRAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f75fbf28adb\nRDX: 00007f75fc08e828 RSI: ffffffffffffffff RDI: 0000000000000003\nRBP: 00007f75fc08a960 R08: 0000000000000000 R09: 00007f75fc08e830\nR10: 00007ffd8da7ed10 R11: 0000000000000293 R12: 00000000002067c3\nR13: 00007ffd8da7ed10 R14: 00007f75fc088f60 R15: 0000000000000032\n \u003c/TASK\u003e\n\nAllocated by task 8886:\n kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:46 [inline]\n set_alloc_info mm/kasan/common.c:434 [inline]\n ____kasan_kmalloc mm/kasan/common.c:513 [inline]\n ____kasan_kmalloc mm/kasan/common.c:472 [inline]\n __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522\n kasan_kmalloc include/linux/kasan.h:269 [inline]\n kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575\n kmalloc include/linux/slab.h:590 [inline]\n nft_setelem_catchall_insert net/netfilter/nf_tables_api.c:5544 [inline]\n nft_setelem_insert net/netfilter/nf_tables_api.c:5562 [inline]\n nft_add_set_elem+0x232e/0x2f40 net/netfilter/nf_tables_api.c:5936\n nf_tables_newsetelem+0x6ff/0xbb0 net/netfilter/nf_tables_api.c:6032\n nfnetlink_rcv_batch+0x1710/0x25f0 net/netfilter/nfnetlink.c:513\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:634 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:652\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/\n---truncated---",
      "id": "GSD-2021-47106",
      "modified": "2024-03-05T06:03:55.094041Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2021-47106",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "aaa31047a6d2",
                          "version_value": "9d558e5f0d6f"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "5.13"
                              },
                              {
                                "lessThan": "5.13",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.15.*",
                                "status": "unaffected",
                                "version": "5.15.12",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "5.16",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()\n\nWe need to use list_for_each_entry_safe() iterator\nbecause we can not access @catchall after kfree_rcu() call.\n\nsyzbot reported:\n\nBUG: KASAN: use-after-free in nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\nRead of size 8 at addr ffff8880716e5b80 by task syz-executor.3/8871\n\nCPU: 1 PID: 8871 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0x8d/0x2ed mm/kasan/report.c:247\n __kasan_report mm/kasan/report.c:433 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:450\n nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\n nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\n nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\n __nft_release_table+0x79f/0xcd0 net/netfilter/nf_tables_api.c:9626\n nft_rcv_nl_event+0x4f8/0x670 net/netfilter/nf_tables_api.c:9688\n notifier_call_chain+0xb5/0x200 kernel/notifier.c:83\n blocking_notifier_call_chain kernel/notifier.c:318 [inline]\n blocking_notifier_call_chain+0x67/0x90 kernel/notifier.c:306\n netlink_release+0xcb6/0x1dd0 net/netlink/af_netlink.c:788\n __sock_release+0xcd/0x280 net/socket.c:649\n sock_close+0x18/0x20 net/socket.c:1314\n __fput+0x286/0x9f0 fs/file_table.c:280\n task_work_run+0xdd/0x1a0 kernel/task_work.c:164\n tracehook_notify_resume include/linux/tracehook.h:189 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:175 [inline]\n exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207\n __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]\n syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300\n do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f75fbf28adb\nCode: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44\nRSP: 002b:00007ffd8da7ec10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003\nRAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f75fbf28adb\nRDX: 00007f75fc08e828 RSI: ffffffffffffffff RDI: 0000000000000003\nRBP: 00007f75fc08a960 R08: 0000000000000000 R09: 00007f75fc08e830\nR10: 00007ffd8da7ed10 R11: 0000000000000293 R12: 00000000002067c3\nR13: 00007ffd8da7ed10 R14: 00007f75fc088f60 R15: 0000000000000032\n \u003c/TASK\u003e\n\nAllocated by task 8886:\n kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:46 [inline]\n set_alloc_info mm/kasan/common.c:434 [inline]\n ____kasan_kmalloc mm/kasan/common.c:513 [inline]\n ____kasan_kmalloc mm/kasan/common.c:472 [inline]\n __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522\n kasan_kmalloc include/linux/kasan.h:269 [inline]\n kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575\n kmalloc include/linux/slab.h:590 [inline]\n nft_setelem_catchall_insert net/netfilter/nf_tables_api.c:5544 [inline]\n nft_setelem_insert net/netfilter/nf_tables_api.c:5562 [inline]\n nft_add_set_elem+0x232e/0x2f40 net/netfilter/nf_tables_api.c:5936\n nf_tables_newsetelem+0x6ff/0xbb0 net/netfilter/nf_tables_api.c:6032\n nfnetlink_rcv_batch+0x1710/0x25f0 net/netfilter/nfnetlink.c:513\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:634 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:652\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/\n---truncated---"
          }
        ]
      },
      "generator": {
        "engine": "bippy-4986f5686161"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/9d558e5f0d6fdd0a568f73dceb0b40c4f5012e5a",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/9d558e5f0d6fdd0a568f73dceb0b40c4f5012e5a"
          },
          {
            "name": "https://git.kernel.org/stable/c/0f7d9b31ce7abdbb29bf018131ac920c9f698518",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/0f7d9b31ce7abdbb29bf018131ac920c9f698518"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: fix use-after-free in nft_set_catchall_destroy()\n\nWe need to use list_for_each_entry_safe() iterator\nbecause we can not access @catchall after kfree_rcu() call.\n\nsyzbot reported:\n\nBUG: KASAN: use-after-free in nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\nBUG: KASAN: use-after-free in nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\nRead of size 8 at addr ffff8880716e5b80 by task syz-executor.3/8871\n\nCPU: 1 PID: 8871 Comm: syz-executor.3 Not tainted 5.16.0-rc5-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\n print_address_description.constprop.0.cold+0x8d/0x2ed mm/kasan/report.c:247\n __kasan_report mm/kasan/report.c:433 [inline]\n kasan_report.cold+0x83/0xdf mm/kasan/report.c:450\n nft_set_catchall_destroy net/netfilter/nf_tables_api.c:4486 [inline]\n nft_set_destroy net/netfilter/nf_tables_api.c:4504 [inline]\n nft_set_destroy+0x3fd/0x4f0 net/netfilter/nf_tables_api.c:4493\n __nft_release_table+0x79f/0xcd0 net/netfilter/nf_tables_api.c:9626\n nft_rcv_nl_event+0x4f8/0x670 net/netfilter/nf_tables_api.c:9688\n notifier_call_chain+0xb5/0x200 kernel/notifier.c:83\n blocking_notifier_call_chain kernel/notifier.c:318 [inline]\n blocking_notifier_call_chain+0x67/0x90 kernel/notifier.c:306\n netlink_release+0xcb6/0x1dd0 net/netlink/af_netlink.c:788\n __sock_release+0xcd/0x280 net/socket.c:649\n sock_close+0x18/0x20 net/socket.c:1314\n __fput+0x286/0x9f0 fs/file_table.c:280\n task_work_run+0xdd/0x1a0 kernel/task_work.c:164\n tracehook_notify_resume include/linux/tracehook.h:189 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:175 [inline]\n exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:207\n __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]\n syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300\n do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86\n entry_SYSCALL_64_after_hwframe+0x44/0xae\nRIP: 0033:0x7f75fbf28adb\nCode: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44\nRSP: 002b:00007ffd8da7ec10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003\nRAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f75fbf28adb\nRDX: 00007f75fc08e828 RSI: ffffffffffffffff RDI: 0000000000000003\nRBP: 00007f75fc08a960 R08: 0000000000000000 R09: 00007f75fc08e830\nR10: 00007ffd8da7ed10 R11: 0000000000000293 R12: 00000000002067c3\nR13: 00007ffd8da7ed10 R14: 00007f75fc088f60 R15: 0000000000000032\n \u003c/TASK\u003e\n\nAllocated by task 8886:\n kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38\n kasan_set_track mm/kasan/common.c:46 [inline]\n set_alloc_info mm/kasan/common.c:434 [inline]\n ____kasan_kmalloc mm/kasan/common.c:513 [inline]\n ____kasan_kmalloc mm/kasan/common.c:472 [inline]\n __kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:522\n kasan_kmalloc include/linux/kasan.h:269 [inline]\n kmem_cache_alloc_trace+0x1ea/0x4a0 mm/slab.c:3575\n kmalloc include/linux/slab.h:590 [inline]\n nft_setelem_catchall_insert net/netfilter/nf_tables_api.c:5544 [inline]\n nft_setelem_insert net/netfilter/nf_tables_api.c:5562 [inline]\n nft_add_set_elem+0x232e/0x2f40 net/netfilter/nf_tables_api.c:5936\n nf_tables_newsetelem+0x6ff/0xbb0 net/netfilter/nf_tables_api.c:6032\n nfnetlink_rcv_batch+0x1710/0x25f0 net/netfilter/nfnetlink.c:513\n nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:634 [inline]\n nfnetlink_rcv+0x3af/0x420 net/netfilter/nfnetlink.c:652\n netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]\n netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345\n netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921\n sock_sendmsg_nosec net/\n---truncated---"
          }
        ],
        "id": "CVE-2021-47106",
        "lastModified": "2024-03-05T13:41:01.900",
        "metrics": {},
        "published": "2024-03-04T19:15:18.750",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/0f7d9b31ce7abdbb29bf018131ac920c9f698518"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9d558e5f0d6fdd0a568f73dceb0b40c4f5012e5a"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}