CVE-2022-50179
ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
We use these services and cookies to improve your user experience. You may opt out if you wish, however, this may limit some features on this site.
Please see our statement on Data Privacy.
ath9k: fix use-after-free in ath9k_hif_usb_rx_cb
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]
Reserved 2025-06-18 | Published 2025-06-18 | Updated 2025-06-18 | Assigner Linuxgit.kernel.org/...c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e
git.kernel.org/...c/ab7a0ddf5f1cdec63cb21840369873806fc36d80
git.kernel.org/...c/e9e21206b8ea62220b486310c61277e7ebfe7cec
git.kernel.org/...c/eccd7c3e2596b574241a7670b5b53f5322f470e5
git.kernel.org/...c/03ca957c5f7b55660957eda20b5db4110319ac7a
git.kernel.org/...c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6
git.kernel.org/...c/b66ebac40f64336ae2d053883bee85261060bd27
git.kernel.org/...c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533
Support options
