CVE-2022-49505 (GCVE-0-2022-49505)
Vulnerability from cvelistv5
Published
2025-02-26 02:13
Modified
2026-08-05 08:55
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
NFC: NULL out the dev->rfkill to prevent UAF
Commit 3e3b5dfcd16a ("NFC: reorder the logic in nfc_{un,}register_device")
assumes the device_is_registered() in function nfc_dev_up() will help
to check when the rfkill is unregistered. However, this check only
take effect when device_del(&dev->dev) is done in nfc_unregister_device().
Hence, the rfkill object is still possible be dereferenced.
The crash trace in latest kernel (5.18-rc2):
[ 68.760105] ==================================================================
[ 68.760330] BUG: KASAN: use-after-free in __lock_acquire+0x3ec1/0x6750
[ 68.760756] Read of size 8 at addr ffff888009c93018 by task fuzz/313
[ 68.760756]
[ 68.760756] CPU: 0 PID: 313 Comm: fuzz Not tainted 5.18.0-rc2 #4
[ 68.760756] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 68.760756] Call Trace:
[ 68.760756] <TASK>
[ 68.760756] dump_stack_lvl+0x57/0x7d
[ 68.760756] print_report.cold+0x5e/0x5db
[ 68.760756] ? __lock_acquire+0x3ec1/0x6750
[ 68.760756] kasan_report+0xbe/0x1c0
[ 68.760756] ? __lock_acquire+0x3ec1/0x6750
[ 68.760756] __lock_acquire+0x3ec1/0x6750
[ 68.760756] ? lockdep_hardirqs_on_prepare+0x410/0x410
[ 68.760756] ? register_lock_class+0x18d0/0x18d0
[ 68.760756] lock_acquire+0x1ac/0x4f0
[ 68.760756] ? rfkill_blocked+0xe/0x60
[ 68.760756] ? lockdep_hardirqs_on_prepare+0x410/0x410
[ 68.760756] ? mutex_lock_io_nested+0x12c0/0x12c0
[ 68.760756] ? nla_get_range_signed+0x540/0x540
[ 68.760756] ? _raw_spin_lock_irqsave+0x4e/0x50
[ 68.760756] _raw_spin_lock_irqsave+0x39/0x50
[ 68.760756] ? rfkill_blocked+0xe/0x60
[ 68.760756] rfkill_blocked+0xe/0x60
[ 68.760756] nfc_dev_up+0x84/0x260
[ 68.760756] nfc_genl_dev_up+0x90/0xe0
[ 68.760756] genl_family_rcv_msg_doit+0x1f4/0x2f0
[ 68.760756] ? genl_family_rcv_msg_attrs_parse.constprop.0+0x230/0x230
[ 68.760756] ? security_capable+0x51/0x90
[ 68.760756] genl_rcv_msg+0x280/0x500
[ 68.760756] ? genl_get_cmd+0x3c0/0x3c0
[ 68.760756] ? lock_acquire+0x1ac/0x4f0
[ 68.760756] ? nfc_genl_dev_down+0xe0/0xe0
[ 68.760756] ? lockdep_hardirqs_on_prepare+0x410/0x410
[ 68.760756] netlink_rcv_skb+0x11b/0x340
[ 68.760756] ? genl_get_cmd+0x3c0/0x3c0
[ 68.760756] ? netlink_ack+0x9c0/0x9c0
[ 68.760756] ? netlink_deliver_tap+0x136/0xb00
[ 68.760756] genl_rcv+0x1f/0x30
[ 68.760756] netlink_unicast+0x430/0x710
[ 68.760756] ? memset+0x20/0x40
[ 68.760756] ? netlink_attachskb+0x740/0x740
[ 68.760756] ? __build_skb_around+0x1f4/0x2a0
[ 68.760756] netlink_sendmsg+0x75d/0xc00
[ 68.760756] ? netlink_unicast+0x710/0x710
[ 68.760756] ? netlink_unicast+0x710/0x710
[ 68.760756] sock_sendmsg+0xdf/0x110
[ 68.760756] __sys_sendto+0x19e/0x270
[ 68.760756] ? __ia32_sys_getpeername+0xa0/0xa0
[ 68.760756] ? fd_install+0x178/0x4c0
[ 68.760756] ? fd_install+0x195/0x4c0
[ 68.760756] ? kernel_fpu_begin_mask+0x1c0/0x1c0
[ 68.760756] __x64_sys_sendto+0xd8/0x1b0
[ 68.760756] ? lockdep_hardirqs_on+0xbf/0x130
[ 68.760756] ? syscall_enter_from_user_mode+0x1d/0x50
[ 68.760756] do_syscall_64+0x3b/0x90
[ 68.760756] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 68.760756] RIP: 0033:0x7f67fb50e6b3
...
[ 68.760756] RSP: 002b:00007f67fa91fe90 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
[ 68.760756] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67fb50e6b3
[ 68.760756] RDX: 000000000000001c RSI: 0000559354603090 RDI: 0000000000000003
[ 68.760756] RBP: 00007f67fa91ff00 R08: 00007f67fa91fedc R09: 000000000000000c
[ 68.760756] R10: 0000000000000000 R11: 0000000000000293 R12: 00007ffe824d496e
[ 68.760756] R13: 00007ffe824d496f R14: 00007f67fa120000 R15: 0000000000000003
[ 68.760756] </TASK>
[ 68.760756]
[ 68.760756] Allocated by task 279:
[ 68.760756] kasan_save_stack+0x1e/0x40
[
---truncated---
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: ff169909eac9e00bf1aa0af739ba6ddfb1b1d135 Version: 47244ac0b65bd74cc70007d8e1bac68bd2baad19 Version: c45cea83e13699bdfd47842e04d09dd43af4c371 Version: 307d2e6cebfca9d92f86c8e2c8e3dd4a8be46ba6 Version: 73a0d12114b4bc1a9def79a623264754b9df698e Version: 8a9c61c3ef187d8891225f9b932390670a43a0d3 Version: 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 Version: 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 Version: 3e3b5dfcd16a3e254aab61bd1e8c417dd4503102 Version: 5ef16d2d172ee56714cff37cd005b98aba08ef5a Version: 4.9.291 ≤ Version: 4.14.256 ≤ Version: 4.19.218 ≤ Version: 5.4.162 ≤ Version: 5.10.82 ≤ Version: 5.15.5 ≤ Version: 4.4.293 ≤ |
||
{
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
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"content": {
"id": "CVE-2022-49505",
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{
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"timestamp": "2025-02-27T17:58:28.672028Z",
"version": "2.0.3"
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{
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{
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"cpeApplicability": [
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{
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{
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{
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"negate": false,
"operator": "OR"
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: NULL out the dev-\u003erfkill 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(\u0026dev-\u003edev) 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] \u003cTASK\u003e\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] \u003c/TASK\u003e\n[ 68.760756]\n[ 68.760756] Allocated by task 279:\n[ 68.760756] kasan_save_stack+0x1e/0x40\n[\n---truncated---"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The UAF is reached via local netlink (NFC_CMD_DEV_UP \u2192 nfc_genl_dev_up \u2192 nfc_dev_up) raced with local device teardown (TTY N_NCI close / nfc_unregister_device), not via NFC radio frames or remote packet processing.\nAC:L - The attacker controls both sides of the race\u2014creating/destroying an NFC device (e.g. N_NCI on a PTY with nfcmrvl) while issuing concurrent NFC_CMD_DEV_UP\u2014and the window between rfkill_destroy and device_del includes sleeping work (llcp unregister, timers), so the race is reliably repeatable.\nPR:L - Unprivileged users can attach N_NCI and register/unregister NFC devices with no capability check on the TTY path; NFC_CMD_DEV_UP uses GENL_ADMIN_PERM, but on NFC-enabled systems a management daemon performs DEV_UP, and when uncertain between PR:L and PR:H the higher-severity Low is chosen.\nUI:N - The attacker drives device create/teardown and DEV_UP (directly or via racing an always-on NFC service) without any separate victim action such as mounting a filesystem or opening a user file.\nS:U - Impact is host-kernel heap UAF within the same OS security authority; this is standard local privilege escalation, not a VM escape, IOMMU/DMA bypass, or sandbox boundary cross.\nC:H - rfkill_blocked() operates on a freed struct rfkill (spinlock/state); classic UAF reclaim/heap spray yields arbitrary kernel read primitives, scored Confidentiality High per UAF guidance.\nI:H - The same freed rfkill object can be reallocated and corrupted before rfkill_blocked() runs, enabling heap write and control-flow hijack primitives, scored Integrity High per UAF guidance.\nA:H - KASAN already demonstrates a use-after-free crash in rfkill_blocked/nfc_dev_up; even without full exploitation this produces a kernel oops/panic (Availability High)."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T08:55:23.598Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/a8e03bcad52dc9afabf650fdbad84f739cec9efa"
},
{
"url": "https://git.kernel.org/stable/c/f81270125b50532624400063281e6611ecd61ddf"
},
{
"url": "https://git.kernel.org/stable/c/6abfaca8711803d0d7cc8c0fac1070a88509d463"
},
{
"url": "https://git.kernel.org/stable/c/fbf9c4c714d3cdeb98b6a18e4d057f931cad1d81"
},
{
"url": "https://git.kernel.org/stable/c/2a1b5110c95e4d49c8c3906270dfcde680a5a7be"
},
{
"url": "https://git.kernel.org/stable/c/1632be63862f183cd5cf1cc094e698e6ec005dfd"
},
{
"url": "https://git.kernel.org/stable/c/4a68938f43b7c2663e4c90bb9bbe29ac8b9a42a0"
},
{
"url": "https://git.kernel.org/stable/c/4f5d71930f41be78557f9714393179025baacd65"
},
{
"url": "https://git.kernel.org/stable/c/1b0e81416a24d6e9b8c2341e22e8bf48f8b8bfc9"
}
],
"title": "NFC: NULL out the dev-\u003erfkill to prevent UAF",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-49505",
"datePublished": "2025-02-26T02:13:37.496Z",
"dateReserved": "2025-02-26T02:08:31.586Z",
"dateUpdated": "2026-08-05T08:55:23.598Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49505\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T17:58:28.672028Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T17:58:30.297Z\"}}], \"cna\": {\"title\": \"NFC: NULL out the dev-\u003erfkill to prevent UAF\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The UAF is reached via local netlink (NFC_CMD_DEV_UP \\u2192 nfc_genl_dev_up \\u2192 nfc_dev_up) raced with local device teardown (TTY N_NCI close / nfc_unregister_device), not via NFC radio frames or remote packet processing.\\nAC:L - The attacker controls both sides of the race\\u2014creating/destroying an NFC device (e.g. N_NCI on a PTY with nfcmrvl) while issuing concurrent NFC_CMD_DEV_UP\\u2014and the window between rfkill_destroy and device_del includes sleeping work (llcp unregister, timers), so the race is reliably repeatable.\\nPR:L - Unprivileged users can attach N_NCI and register/unregister NFC devices with no capability check on the TTY path; NFC_CMD_DEV_UP uses GENL_ADMIN_PERM, but on NFC-enabled systems a management daemon performs DEV_UP, and when uncertain between PR:L and PR:H the higher-severity Low is chosen.\\nUI:N - The attacker drives device create/teardown and DEV_UP (directly or via racing an always-on NFC service) without any separate victim action such as mounting a filesystem or opening a user file.\\nS:U - Impact is host-kernel heap UAF within the same OS security authority; this is standard local privilege escalation, not a VM escape, IOMMU/DMA bypass, or sandbox boundary cross.\\nC:H - rfkill_blocked() operates on a freed struct rfkill (spinlock/state); classic UAF reclaim/heap spray yields arbitrary kernel read primitives, scored Confidentiality High per UAF guidance.\\nI:H - The same freed rfkill object can be reallocated and corrupted before rfkill_blocked() runs, enabling heap write and control-flow hijack primitives, scored Integrity High per UAF guidance.\\nA:H - KASAN already demonstrates a use-after-free crash in rfkill_blocked/nfc_dev_up; even without full exploitation this produces a kernel oops/panic (Availability High).\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ff169909eac9e00bf1aa0af739ba6ddfb1b1d135\", \"lessThan\": \"a8e03bcad52dc9afabf650fdbad84f739cec9efa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"47244ac0b65bd74cc70007d8e1bac68bd2baad19\", \"lessThan\": \"f81270125b50532624400063281e6611ecd61ddf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c45cea83e13699bdfd47842e04d09dd43af4c371\", \"lessThan\": \"6abfaca8711803d0d7cc8c0fac1070a88509d463\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"307d2e6cebfca9d92f86c8e2c8e3dd4a8be46ba6\", \"lessThan\": \"fbf9c4c714d3cdeb98b6a18e4d057f931cad1d81\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"73a0d12114b4bc1a9def79a623264754b9df698e\", \"lessThan\": \"2a1b5110c95e4d49c8c3906270dfcde680a5a7be\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8a9c61c3ef187d8891225f9b932390670a43a0d3\", \"lessThan\": \"1632be63862f183cd5cf1cc094e698e6ec005dfd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3e3b5dfcd16a3e254aab61bd1e8c417dd4503102\", \"lessThan\": \"4a68938f43b7c2663e4c90bb9bbe29ac8b9a42a0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3e3b5dfcd16a3e254aab61bd1e8c417dd4503102\", \"lessThan\": \"4f5d71930f41be78557f9714393179025baacd65\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3e3b5dfcd16a3e254aab61bd1e8c417dd4503102\", \"lessThan\": \"1b0e81416a24d6e9b8c2341e22e8bf48f8b8bfc9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5ef16d2d172ee56714cff37cd005b98aba08ef5a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4.9.291\", \"lessThan\": \"4.9.318\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.14.256\", \"lessThan\": \"4.14.283\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.19.218\", \"lessThan\": \"4.19.247\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.4.162\", \"lessThan\": \"5.4.198\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.10.82\", \"lessThan\": \"5.10.121\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.15.5\", \"lessThan\": \"5.15.46\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.4.293\", \"lessThan\": \"4.5\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/nfc/core.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.16\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.16\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.9.318\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.9.*\"}, {\"status\": \"unaffected\", \"version\": \"4.14.283\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.247\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.198\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.121\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.46\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/nfc/core.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/a8e03bcad52dc9afabf650fdbad84f739cec9efa\"}, {\"url\": \"https://git.kernel.org/stable/c/f81270125b50532624400063281e6611ecd61ddf\"}, {\"url\": \"https://git.kernel.org/stable/c/6abfaca8711803d0d7cc8c0fac1070a88509d463\"}, {\"url\": \"https://git.kernel.org/stable/c/fbf9c4c714d3cdeb98b6a18e4d057f931cad1d81\"}, {\"url\": \"https://git.kernel.org/stable/c/2a1b5110c95e4d49c8c3906270dfcde680a5a7be\"}, {\"url\": \"https://git.kernel.org/stable/c/1632be63862f183cd5cf1cc094e698e6ec005dfd\"}, {\"url\": \"https://git.kernel.org/stable/c/4a68938f43b7c2663e4c90bb9bbe29ac8b9a42a0\"}, {\"url\": \"https://git.kernel.org/stable/c/4f5d71930f41be78557f9714393179025baacd65\"}, {\"url\": \"https://git.kernel.org/stable/c/1b0e81416a24d6e9b8c2341e22e8bf48f8b8bfc9\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nNFC: NULL out the dev-\u003erfkill 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(\u0026dev-\u003edev) 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] \u003cTASK\u003e\\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] \u003c/TASK\u003e\\n[ 68.760756]\\n[ 68.760756] Allocated by task 279:\\n[ 68.760756] kasan_save_stack+0x1e/0x40\\n[\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.318\", \"versionStartIncluding\": \"4.9.291\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.283\", \"versionStartIncluding\": \"4.14.256\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.247\", \"versionStartIncluding\": \"4.19.218\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.198\", \"versionStartIncluding\": \"5.4.162\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.121\", \"versionStartIncluding\": \"5.10.82\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.46\", \"versionStartIncluding\": \"5.15.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.14\", \"versionStartIncluding\": \"5.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.3\", \"versionStartIncluding\": \"5.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"5.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.4.293\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:55:23.598Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-49505\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:55:23.598Z\", \"dateReserved\": \"2025-02-26T02:08:31.586Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:13:37.496Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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