Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs() Syzkaller reports a long-known leak of urbs in ath9k_hif_usb_dealloc_tx_urbs(). The cause of the leak is that usb_get_urb() is called but usb_free_urb() (or usb_put_urb()) is not called inside usb_kill_urb() as urb->dev or urb->ep fields have not been initialized and usb_kill_urb() returns immediately. The patch removes trying to kill urbs located in hif_dev->tx.tx_buf because hif_dev->tx.tx_buf is not supposed to contain urbs which are in pending state (the pending urbs are stored in hif_dev->tx.tx_pending). The tx.tx_lock is acquired so there should not be any changes in the list. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6f0706ef39fecc6bf56d67728fe0c94e26b43e9d before 134ae5eba41294eff76e4be20d6001b8f0192207; affected 795d57a558d106b8a5bc2bd7aeaf707d9a099244 before 472312fef2b9eccaa03bd59e0ab2527da945e736; affected df4318440c1568b7dedc5f7d4e617d0e297a1313 before eddbb8f7620f9f8008b090a6e10c460074ca575a; affected a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 before 9850791d389b342ae6e573fe8198db0b4d338352; affected 03fb92a432ea5abe5909bca1455b7e44a9380480 before c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d; affected 03fb92a432ea5abe5909bca1455b7e44a9380480 before d856f7574bcc1d81de565a857caf32f122cd7ce0; affected 03fb92a432ea5abe5909bca1455b7e44a9380480 before c05189a429fdb371dd455c3c466d67ac2ebff152; affected 03fb92a432ea5abe5909bca1455b7e44a9380480 before 08aa0537ec8cf29ceccae98acc1a534fc12598c1; affected 03fb92a432ea5abe5909bca1455b7e44a9380480 before c2a94de38c74e86f49124ac14f093d6a5c377a90; affected b92e116ae36f498858dbb18e29a066c3f5348965; affected 7f5972267295fe49f8da8eb42bc2eb3d140860c0; affected 2d72d5ce63c92f56b9f978e8befb5838144176b9; affected 4.9.241 before 4.9.337; affected 4.14.203 before 4.14.303; affected 4.19.154 before 4.19.270; affected 5.4.73 before 5.4.229; affected 4.4.241 before 4.5; affected 5.8.17 before 5.9; affected 5.9.2 before 5.10 |
| Linux / Linux | affected 5.10; unaffected 0 before 5.10; unaffected 4.9.337 through 4.9.*; unaffected 4.14.303 through 4.14.*; unaffected 4.19.270 through 4.19.*; unaffected 5.4.229 through 5.4.*; unaffected 5.10.163 through 5.10.*; unaffected 5.15.86 through 5.15.*; unaffected 6.0.16 through 6.0.*; unaffected 6.1.2 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/134ae5eba41294eff76e4be20d6001b8f0192207
- https://git.kernel.org/stable/c/472312fef2b9eccaa03bd59e0ab2527da945e736
- https://git.kernel.org/stable/c/eddbb8f7620f9f8008b090a6e10c460074ca575a
- https://git.kernel.org/stable/c/9850791d389b342ae6e573fe8198db0b4d338352
- https://git.kernel.org/stable/c/c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d
- https://git.kernel.org/stable/c/d856f7574bcc1d81de565a857caf32f122cd7ce0
- https://git.kernel.org/stable/c/c05189a429fdb371dd455c3c466d67ac2ebff152
- https://git.kernel.org/stable/c/08aa0537ec8cf29ceccae98acc1a534fc12598c1
- https://git.kernel.org/stable/c/c2a94de38c74e86f49124ac14f093d6a5c377a90