gsd-2021-46924
Vulnerability from gsd
Modified
2024-02-26 06:03
Details
In the Linux kernel, the following vulnerability has been resolved:
NFC: st21nfca: Fix memory leak in device probe and remove
'phy->pending_skb' is alloced when device probe, but forgot to free
in the error handling path and remove path, this cause memory leak
as follows:
unreferenced object 0xffff88800bc06800 (size 512):
comm "8", pid 11775, jiffies 4295159829 (age 9.032s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000d66c09ce>] __kmalloc_node_track_caller+0x1ed/0x450
[<00000000c93382b3>] kmalloc_reserve+0x37/0xd0
[<000000005fea522c>] __alloc_skb+0x124/0x380
[<0000000019f29f9a>] st21nfca_hci_i2c_probe+0x170/0x8f2
Fix it by freeing 'pending_skb' in error and remove.
Aliases
{
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"remediation": "unknown",
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"id": "GSD-2021-46924",
"modified": "2024-02-26T06:03:52.846268Z",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: st21nfca: Fix memory leak in device probe and remove\n\n\u0027phy-\u003epending_skb\u0027 is alloced when device probe, but forgot to free\nin the error handling path and remove path, this cause memory leak\nas follows:\n\nunreferenced object 0xffff88800bc06800 (size 512):\n comm \"8\", pid 11775, jiffies 4295159829 (age 9.032s)\n hex dump (first 32 bytes):\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................\n backtrace:\n [\u003c00000000d66c09ce\u003e] __kmalloc_node_track_caller+0x1ed/0x450\n [\u003c00000000c93382b3\u003e] kmalloc_reserve+0x37/0xd0\n [\u003c000000005fea522c\u003e] __alloc_skb+0x124/0x380\n [\u003c0000000019f29f9a\u003e] st21nfca_hci_i2c_probe+0x170/0x8f2\n\nFix it by freeing \u0027pending_skb\u0027 in error and remove."
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"value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: NFC: st21nfca: corrige la p\u00e9rdida de memoria en la sonda del dispositivo y elimina \u0027phy-\u0026gt;pending_skb\u0027 cuando se asigna la sonda del dispositivo, pero olvid\u00f3 liberarla en la ruta de manejo de errores y eliminar la ruta, esto causa p\u00e9rdida de memoria de la siguiente manera: objeto sin referencia 0xffff88800bc06800 (tama\u00f1o 512): comunicaci\u00f3n \"8\", pid 11775, santiago 4295159829 (edad 9.032 s) volcado hexadecimal (primeros 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................. backtrace: [\u0026lt;00000000d66c09ce\u0026gt;] __kmalloc_node_track_caller+0x1ed/0x450 [\u0026lt;00000000c93382b3\u0026gt;] kmalloc_reserve+0x37/0xd0 [\u0026lt;000000005fea522c\u0026gt;] __alloc_skb+0x124/0x380 [ \u0026lt;0000000019f29f9a\u0026gt;] st21nfca_hci_i2c_probe+0x170/0x8f2 Solucionarlo liberando \u0027pending_skb\u0027 por error y elim\u00ednelo."
}
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"id": "CVE-2021-46924",
"lastModified": "2024-04-10T15:23:33.673",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
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"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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"published": "2024-02-27T10:15:07.150",
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}
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