Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected fb9987d0f748c983bb795a86f47522313f701a08 before 62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e; affected fb9987d0f748c983bb795a86f47522313f701a08 before ab7a0ddf5f1cdec63cb21840369873806fc36d80; affected fb9987d0f748c983bb795a86f47522313f701a08 before e9e21206b8ea62220b486310c61277e7ebfe7cec; affected fb9987d0f748c983bb795a86f47522313f701a08 before eccd7c3e2596b574241a7670b5b53f5322f470e5; affected fb9987d0f748c983bb795a86f47522313f701a08 before 03ca957c5f7b55660957eda20b5db4110319ac7a; affected fb9987d0f748c983bb795a86f47522313f701a08 before 6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6; affected fb9987d0f748c983bb795a86f47522313f701a08 before b66ebac40f64336ae2d053883bee85261060bd27; affected fb9987d0f748c983bb795a86f47522313f701a08 before 0ac4827f78c7ffe8eef074bc010e7e34bc22f533 |
| Linux / Linux | affected 2.6.35; unaffected 0 before 2.6.35; unaffected 4.14.291 through 4.14.*; unaffected 4.19.256 through 4.19.*; unaffected 5.4.211 through 5.4.*; unaffected 5.10.137 through 5.10.*; unaffected 5.15.61 through 5.15.*; unaffected 5.18.18 through 5.18.*; unaffected 5.19.2 through 5.19.*; unaffected 6.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/62bc1ea5c7401d77eaf73d0c6a15f3d2e742856e
- https://git.kernel.org/stable/c/ab7a0ddf5f1cdec63cb21840369873806fc36d80
- https://git.kernel.org/stable/c/e9e21206b8ea62220b486310c61277e7ebfe7cec
- https://git.kernel.org/stable/c/eccd7c3e2596b574241a7670b5b53f5322f470e5
- https://git.kernel.org/stable/c/03ca957c5f7b55660957eda20b5db4110319ac7a
- https://git.kernel.org/stable/c/6b14ab47937ba441e75e8dbb9fbfc9c55efa41c6
- https://git.kernel.org/stable/c/b66ebac40f64336ae2d053883bee85261060bd27
- https://git.kernel.org/stable/c/0ac4827f78c7ffe8eef074bc010e7e34bc22f533