CVE-2022-50179

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-50179
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]

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a Patch
https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533 Patch
https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e Patch
https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6 Patch
https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80 Patch
https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27 Patch
https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec Patch
https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

20 Nov 2025, 22:02

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ath9k: corrección del Use-After-Free en ath9k_hif_usb_rx_cb. Syzbot reportó una lectura de Use-After-Free en ath9k_hif_usb_rx_cb() [0]. El problema residía en una inicialización incorrecta de htc_handle-&gt;drv_priv. Posible rastreo de llamadas que puede activar el Use-After-Free: ath9k_htc_probe_device() /* htc_handle-&gt;drv_priv = priv; */ ath9k_htc_wait_for_target() &lt;--- Error en ieee80211_free_hw() &lt;--- el puntero privado se liberó ... ath9k_hif_usb_rx_cb() ath9k_hif_usb_rx_stream() RX_STAT_INC() &lt;--- acceso a htc_handle-&gt;drv_priv Para no agregar protección sofisticada para drv_priv, podemos mover la inicialización de htc_handle-&gt;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 informó una desreferencia NULL relacionada en esas macros [1]
CWE CWE-416
References () https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a - () https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a - Patch
References () https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533 - () https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533 - Patch
References () https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e - () https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e - Patch
References () https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6 - () https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6 - Patch
References () https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80 - () https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80 - Patch
References () https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27 - () https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27 - Patch
References () https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec - () https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec - Patch
References () https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5 - () https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5 - Patch
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.8
First Time Linux
Linux linux Kernel

18 Jun 2025, 11:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-06-18 11:15

Updated : 2025-11-20 22:02

NVD link : CVE-2022-50179

Mitre link : CVE-2022-50179

CVE.ORG link : CVE-2022-50179

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-416

Use After Free