cve-2021-46924
Vulnerability from cvelistv5
Published
2024-02-27 09:43
Modified
2024-12-19 07:31
Severity ?
EPSS score ?
Summary
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.
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 Version: 68957303f44a501af5cf37913208a2acaa6bcdf1 |
||||
|
|||||||
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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.\"},{\"lang\":\"es\",\"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;] 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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.
- 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.