CVE-2022-50179

HIGH EPSS 11.0%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
7.8 CVSS 3.1
High
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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]

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
11.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 7

VendorProductVersionRange
linuxlinux_kernel*≥2.6.35  –  <4.14.291
linuxlinux_kernel*≥4.15  –  <4.19.256
linuxlinux_kernel*≥4.20  –  <5.4.211
linuxlinux_kernel*≥5.5  –  <5.10.137
linuxlinux_kernel*≥5.11  –  <5.15.61
linuxlinux_kernel*≥5.16  –  <5.18.18
linuxlinux_kernel*≥5.19  –  <5.19.2

References 8

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

Remediation

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