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nvd-json-data-feeds/CVE-2022/CVE-2022-495xx/CVE-2022-49505.json
cad-safe-bot 6a206bf025 Auto-Update: 2025-03-09T03:00:19.873769+00:00
2025-03-09 03:03:50 +00:00

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{
"id": "CVE-2022-49505",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-02-26T07:01:26.633",
"lastModified": "2025-02-27T18:15:26.007",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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---"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFC: NULL en dev-&gt;rfkill para evitar UAF Commit 3e3b5dfcd16a (\"NFC: reordenar la l\u00f3gica en nfc_{un,}register_device\") supone que device_is_registered() en la funci\u00f3n nfc_dev_up() ayudar\u00e1 a comprobar cu\u00e1ndo se anula el registro de rfkill. Sin embargo, esta comprobaci\u00f3n solo tiene efecto cuando se realiza device_del(&amp;dev-&gt;dev) en nfc_unregister_device(). Por lo tanto, el objeto rfkill a\u00fan puede desreferenciarse. El rastro de falla en el kernel m\u00e1s reciente (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] [ 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] [ 68.760756] [ 68.760756] Allocated by task 279: [ 68.760756] kasan_save_stack+0x1e/0x40 [ ---truncated--- "
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
]
},
"weaknesses": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/1632be63862f183cd5cf1cc094e698e6ec005dfd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1b0e81416a24d6e9b8c2341e22e8bf48f8b8bfc9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/2a1b5110c95e4d49c8c3906270dfcde680a5a7be",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4a68938f43b7c2663e4c90bb9bbe29ac8b9a42a0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/4f5d71930f41be78557f9714393179025baacd65",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6abfaca8711803d0d7cc8c0fac1070a88509d463",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a8e03bcad52dc9afabf650fdbad84f739cec9efa",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f81270125b50532624400063281e6611ecd61ddf",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/fbf9c4c714d3cdeb98b6a18e4d057f931cad1d81",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}
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