CVE-2022-50179

ath9k: fix use-after-free in ath9k_hif_usb_rx_cb

HIGH

7.8

CVSS Score

Published: June 18, 2025 at 11:03 AM UTC

Updated: June 17, 2026 at 05:22 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.3%

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]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

2.6.35 ≤ v < 4.14.2912.6.35 ≤ v < 4.19.2562.6.35 ≤ v < 5.10.1372.6.35 ≤ v < 5.15.612.6.35 ≤ v < 5.18.182.6.35 ≤ v < 5.19.22.6.35 ≤ v < 5.4.2112.6.35 ≤ v < 6.04.15 ≤ v < 4.19.2564.20 ≤ v < 5.4.2115.11 ≤ v < 5.15.615.16 ≤ v < 5.18.185.19 ≤ v < 5.19.25.5 ≤ v < 5.10.1372.6.35fb9987d0f748c983bb795a86f47522313f701a08

Vendor states this is fixed in 03ca957c5f7b55660957eda20b5db4110319ac7a (fixed)

Vendor states this is fixed in 0ac4827f78c7ffe8eef074bc010e7e34bc22f533 (fixed)

Vendor states this is fixed in 62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e (fixed)

Vendor states this is fixed in 6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6 (fixed)

Vendor states this is fixed in ab7a0ddf5f1cdec63cb21840369873806fc36d80 (fixed)

Vendor states this is fixed in b66ebac40f64336ae2d053883bee85261060bd27 (fixed)

Vendor states this is fixed in e9e21206b8ea62220b486310c61277e7ebfe7cec (fixed)

Vendor states this is fixed in eccd7c3e2596b574241a7670b5b53f5322f470e5 (fixed)

Vendor states this is fixed in 2.6.35 (unaffected)

Vendor states this is fixed in 4.14.291 (unaffected)

Vendor states this is fixed in 4.19.256 (unaffected)

Vendor states this is fixed in 5.10.137 (unaffected)