fkie_cve-2022-50179
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-11-20 22:02
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
Syzbot reported use-after-free Read in ath9k_hif_usb_rx_cb() [0]. The
problem was in incorrect htc_handle->drv_priv initialization.
Probable call trace which can trigger use-after-free:
ath9k_htc_probe_device()
/* htc_handle->drv_priv = priv; */
ath9k_htc_wait_for_target() <--- Failed
ieee80211_free_hw() <--- priv pointer is freed
<IRQ>
...
ath9k_hif_usb_rx_cb()
ath9k_hif_usb_rx_stream()
RX_STAT_INC() <--- htc_handle->drv_priv access
In order to not add fancy protection for drv_priv we can move
htc_handle->drv_priv initialization at the end of the
ath9k_htc_probe_device() and add helper macro to make
all *_STAT_* macros NULL safe, since syzbot has reported related NULL
deref in that macros [1]
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nath9k: fix use-after-free in ath9k_hif_usb_rx_cb\n\nSyzbot reported use-after-free Read in ath9k_hif_usb_rx_cb() [0]. The\nproblem was in incorrect htc_handle-\u003edrv_priv initialization.\n\nProbable call trace which can trigger use-after-free:\n\nath9k_htc_probe_device()\n /* htc_handle-\u003edrv_priv = priv; */\n ath9k_htc_wait_for_target() \u003c--- Failed\n ieee80211_free_hw()\t\t \u003c--- priv pointer is freed\n\n\u003cIRQ\u003e\n...\nath9k_hif_usb_rx_cb()\n ath9k_hif_usb_rx_stream()\n RX_STAT_INC()\t\t\u003c--- htc_handle-\u003edrv_priv access\n\nIn order to not add fancy protection for drv_priv we can move\nhtc_handle-\u003edrv_priv initialization at the end of the\nath9k_htc_probe_device() and add helper macro to make\nall *_STAT_* macros NULL safe, since syzbot has reported related NULL\nderef in that macros [1]"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ath9k: correcci\u00f3n del Use-After-Free en ath9k_hif_usb_rx_cb. Syzbot report\u00f3 una lectura de Use-After-Free en ath9k_hif_usb_rx_cb() [0]. El problema resid\u00eda en una inicializaci\u00f3n incorrecta de htc_handle-\u0026gt;drv_priv. Posible rastreo de llamadas que puede activar el Use-After-Free: ath9k_htc_probe_device() /* htc_handle-\u0026gt;drv_priv = priv; */ ath9k_htc_wait_for_target() \u0026lt;--- Error en ieee80211_free_hw() \u0026lt;--- el puntero privado se liber\u00f3 ... ath9k_hif_usb_rx_cb() ath9k_hif_usb_rx_stream() RX_STAT_INC() \u0026lt;--- acceso a htc_handle-\u0026gt;drv_priv Para no agregar protecci\u00f3n sofisticada para drv_priv, podemos mover la inicializaci\u00f3n de htc_handle-\u0026gt;drv_priv al final de ath9k_htc_probe_device() y agregar una macro auxiliar para hacer que todas las macros *_STAT_* sean seguras para NULL, ya que syzbot inform\u00f3 una desreferencia NULL relacionada en esas macros [1]"
}
],
"id": "CVE-2022-50179",
"lastModified": "2025-11-20T22:02:06.180",
"metrics": {
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"attackVector": "LOCAL",
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"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"source": "nvd@nist.gov",
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"published": "2025-06-18T11:15:48.330",
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"value": "CWE-416"
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"type": "Primary"
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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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