CVE-2022-50740wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()
Updated under an hour ago ()
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- May 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 6f0706ef39fecc6bf56d67728fe0c94e26b43e9d before 134ae5eba41294eff76e4be20d6001b8f0192207; from 795d57a558d106b8a5bc2bd7aeaf707d9a099244 before 472312fef2b9eccaa03bd59e0ab2527da945e736; from df4318440c1568b7dedc5f7d4e617d0e297a1313 before eddbb8f7620f9f8008b090a6e10c460074ca575a; from a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 before 9850791d389b342ae6e573fe8198db0b4d338352; from 03fb92a432ea5abe5909bca1455b7e44a9380480 before c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d; from 03fb92a432ea5abe5909bca1455b7e44a9380480 before d856f7574bcc1d81de565a857caf32f122cd7ce0; from 03fb92a432ea5abe5909bca1455b7e44a9380480 before c05189a429fdb371dd455c3c466d67ac2ebff152; from 03fb92a432ea5abe5909bca1455b7e44a9380480 before 08aa0537ec8cf29ceccae98acc1a534fc12598c1; and 11 more ranges | CNA record |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.