{"schema_version":"1.9.0","id":"CVE-2022-49505","published":"2025-02-26T02:13:37.496Z","modified":"2026-08-12T03:51:20.216850871Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1194-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1263-1","SUSE-SU-2025:1293-1"],"summary":"NFC: NULL out the dev->rfkill to prevent UAF","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: NULL out the dev->rfkill to prevent UAF\n\nCommit 3e3b5dfcd16a (\"NFC: reorder the logic in nfc_{un,}register_device\")\nassumes the device_is_registered() in function nfc_dev_up() will help\nto check when the rfkill is unregistered. However, this check only\ntake effect when device_del(&dev->dev) is done in nfc_unregister_device().\nHence, the rfkill object is still possible be dereferenced.\n\nThe crash trace in latest kernel (5.18-rc2):\n\n[   68.760105] ==================================================================\n[   68.760330] BUG: KASAN: use-after-free in __lock_acquire+0x3ec1/0x6750\n[   68.760756] Read of size 8 at addr ffff888009c93018 by task fuzz/313\n[   68.760756]\n[   68.760756] CPU: 0 PID: 313 Comm: fuzz Not tainted 5.18.0-rc2 #4\n[   68.760756] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014\n[   68.760756] Call Trace:\n[   68.760756]  <TASK>\n[   68.760756]  dump_stack_lvl+0x57/0x7d\n[   68.760756]  print_report.cold+0x5e/0x5db\n[   68.760756]  ? __lock_acquire+0x3ec1/0x6750\n[   68.760756]  kasan_report+0xbe/0x1c0\n[   68.760756]  ? __lock_acquire+0x3ec1/0x6750\n[   68.760756]  __lock_acquire+0x3ec1/0x6750\n[   68.760756]  ? lockdep_hardirqs_on_prepare+0x410/0x410\n[   68.760756]  ? register_lock_class+0x18d0/0x18d0\n[   68.760756]  lock_acquire+0x1ac/0x4f0\n[   68.760756]  ? rfkill_blocked+0xe/0x60\n[   68.760756]  ? lockdep_hardirqs_on_prepare+0x410/0x410\n[   68.760756]  ? mutex_lock_io_nested+0x12c0/0x12c0\n[   68.760756]  ? nla_get_range_signed+0x540/0x540\n[   68.760756]  ? _raw_spin_lock_irqsave+0x4e/0x50\n[   68.760756]  _raw_spin_lock_irqsave+0x39/0x50\n[   68.760756]  ? rfkill_blocked+0xe/0x60\n[   68.760756]  rfkill_blocked+0xe/0x60\n[   68.760756]  nfc_dev_up+0x84/0x260\n[   68.760756]  nfc_genl_dev_up+0x90/0xe0\n[   68.760756]  genl_family_rcv_msg_doit+0x1f4/0x2f0\n[   68.760756]  ? genl_family_rcv_msg_attrs_parse.constprop.0+0x230/0x230\n[   68.760756]  ? security_capable+0x51/0x90\n[   68.760756]  genl_rcv_msg+0x280/0x500\n[   68.760756]  ? genl_get_cmd+0x3c0/0x3c0\n[   68.760756]  ? lock_acquire+0x1ac/0x4f0\n[   68.760756]  ? nfc_genl_dev_down+0xe0/0xe0\n[   68.760756]  ? lockdep_hardirqs_on_prepare+0x410/0x410\n[   68.760756]  netlink_rcv_skb+0x11b/0x340\n[   68.760756]  ? genl_get_cmd+0x3c0/0x3c0\n[   68.760756]  ? netlink_ack+0x9c0/0x9c0\n[   68.760756]  ? netlink_deliver_tap+0x136/0xb00\n[   68.760756]  genl_rcv+0x1f/0x30\n[   68.760756]  netlink_unicast+0x430/0x710\n[   68.760756]  ? memset+0x20/0x40\n[   68.760756]  ? netlink_attachskb+0x740/0x740\n[   68.760756]  ? __build_skb_around+0x1f4/0x2a0\n[   68.760756]  netlink_sendmsg+0x75d/0xc00\n[   68.760756]  ? netlink_unicast+0x710/0x710\n[   68.760756]  ? netlink_unicast+0x710/0x710\n[   68.760756]  sock_sendmsg+0xdf/0x110\n[   68.760756]  __sys_sendto+0x19e/0x270\n[   68.760756]  ? __ia32_sys_getpeername+0xa0/0xa0\n[   68.760756]  ? fd_install+0x178/0x4c0\n[   68.760756]  ? fd_install+0x195/0x4c0\n[   68.760756]  ? kernel_fpu_begin_mask+0x1c0/0x1c0\n[   68.760756]  __x64_sys_sendto+0xd8/0x1b0\n[   68.760756]  ? lockdep_hardirqs_on+0xbf/0x130\n[   68.760756]  ? syscall_enter_from_user_mode+0x1d/0x50\n[   68.760756]  do_syscall_64+0x3b/0x90\n[   68.760756]  entry_SYSCALL_64_after_hwframe+0x44/0xae\n[   68.760756] RIP: 0033:0x7f67fb50e6b3\n...\n[   68.760756] RSP: 002b:00007f67fa91fe90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c\n[   68.760756] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67fb50e6b3\n[   68.760756] RDX: 000000000000001c RSI: 0000559354603090 RDI: 0000000000000003\n[   68.760756] RBP: 00007f67fa91ff00 R08: 00007f67fa91fedc R09: 000000000000000c\n[   68.760756] R10: 0000000000000000 R11: 0000000000000293 R12: 00007ffe824d496e\n[   68.760756] R13: 00007ffe824d496f R14: 00007f67fa120000 R15: 0000000000000003\n\n[   68.760756]  </TASK>\n[   68.760756]\n[   68.760756] Allocated by task 279:\n[   68.760756]  kasan_save_stack+0x1e/0x40\n[\n---truncated---","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ff169909eac9e00bf1aa0af739ba6ddfb1b1d135"},{"fixed":"a8e03bcad52dc9afabf650fdbad84f739cec9efa"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"47244ac0b65bd74cc70007d8e1bac68bd2baad19"},{"fixed":"f81270125b50532624400063281e6611ecd61ddf"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c45cea83e13699bdfd47842e04d09dd43af4c371"},{"fixed":"6abfaca8711803d0d7cc8c0fac1070a88509d463"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"307d2e6cebfca9d92f86c8e2c8e3dd4a8be46ba6"},{"fixed":"fbf9c4c714d3cdeb98b6a18e4d057f931cad1d81"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"73a0d12114b4bc1a9def79a623264754b9df698e"},{"fixed":"2a1b5110c95e4d49c8c3906270dfcde680a5a7be"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8a9c61c3ef187d8891225f9b932390670a43a0d3"},{"fixed":"1632be63862f183cd5cf1cc094e698e6ec005dfd"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3e3b5dfcd16a3e254aab61bd1e8c417dd4503102"},{"fixed":"4a68938f43b7c2663e4c90bb9bbe29ac8b9a42a0"},{"fixed":"4f5d71930f41be78557f9714393179025baacd65"},{"fixed":"1b0e81416a24d6e9b8c2341e22e8bf48f8b8bfc9"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"5ef16d2d172ee56714cff37cd005b98aba08ef5a"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.9.291"},{"fixed":"4.9.318"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.14.256"},{"fixed":"4.14.283"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.19.218"},{"fixed":"4.19.247"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.4.162"},{"fixed":"5.4.198"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.10.82"},{"fixed":"5.10.121"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5.15.5"},{"fixed":"5.15.46"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4.4.293"},{"fixed":"4.5"}]}],"versions":["v4.9.317","v4.9.316","v4.9.315","v4.9.314","v4.9.313","v4.9.312","v4.9.311","v4.9.310","v4.9.309","v4.9.308","v4.9.307","v4.9.306","v4.9.305","v4.9.304","v4.9.303","v4.9.302","v4.9.301","v4.9.300","v4.9.299","v4.9.298","v4.9.297","v4.9.296","v4.9.295","v4.9.294","v4.9.293","v4.9.292","v4.9.291","v4.14.282","v4.14.281","v4.14.280","v4.14.279","v4.14.278","v4.14.277","v4.14.276","v4.14.275","v4.14.274","v4.14.273","v4.14.272","v4.14.271","v4.14.270","v4.14.269","v4.14.268","v4.14.267","v4.14.266","v4.14.265","v4.14.264","v4.14.263","v4.14.262","v4.14.261","v4.14.260","v4.14.259","v4.14.258","v4.14.257","v4.14.256","v4.19.246","v4.19.245","v4.19.244","v4.19.243","v4.19.242","v4.19.241","v4.19.240","v4.19.239","v4.19.238","v4.19.237","v4.19.236","v4.19.235","v4.19.234","v4.19.233","v4.19.232","v4.19.231","v4.19.230","v4.19.229","v4.19.228","v4.19.227","v4.19.226","v4.19.225","v4.19.224","v4.19.223","v4.19.222","v4.19.221","v4.19.220","v4.19.219","v4.19.218","v5.4.197","v5.4.196","v5.4.195","v5.4.194","v5.4.193","v5.4.192","v5.4.191","v5.4.190","v5.4.189","v5.4.188","v5.4.187","v5.4.186","v5.4.185","v5.4.184","v5.4.183","v5.4.182","v5.4.181","v5.4.180","v5.4.179","v5.4.178","v5.4.177","v5.4.176","v5.4.175","v5.4.174","v5.4.173","v5.4.172","v5.4.171","v5.4.170","v5.4.169","v5.4.168","v5.4.167","v5.4.166","v5.4.165","v5.4.164","v5.4.163","v5.4.162","v5.10.120","v5.10.119","v5.10.118","v5.10.117","v5.10.116","v5.10.115","v5.10.114","v5.10.113","v5.10.112","v5.10.111","v5.10.110","v5.10.109","v5.10.108","v5.10.107","v5.10.106","v5.10.105","v5.10.104","v5.10.103","v5.10.102","v5.10.101","v5.10.100","v5.10.99","v5.10.98","v5.10.97","v5.10.96","v5.10.95","v5.10.94","v5.10.93","v5.10.92","v5.10.91","v5.10.90","v5.10.89","v5.10.88","v5.10.87","v5.10.86","v5.10.85","v5.10.84","v5.10.83","v5.10.82","v5.15.45","v5.15.44","v5.15.43","v5.15.42","v5.15.41","v5.15.40","v5.15.39","v5.15.38","v5.15.37","v5.15.36","v5.15.35","v5.15.34","v5.15.33","v5.15.32","v5.15.31","v5.15.30","v5.15.29","v5.15.28","v5.15.27","v5.15.26","v5.15.25","v5.15.24","v5.15.23","v5.15.22","v5.15.21","v5.15.20","v5.15.19","v5.15.18","v5.15.17","v5.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