CVE-2022-50740
wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Timeline
ID reserved
By Linux
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 6f0706ef39fecc6bf56d67728fe0c94e26b43e9d – < 134ae5eba41294eff76e4be20d6001b8f0192207
- affected 795d57a558d106b8a5bc2bd7aeaf707d9a099244 – < 472312fef2b9eccaa03bd59e0ab2527da945e736
- affected df4318440c1568b7dedc5f7d4e617d0e297a1313 – < eddbb8f7620f9f8008b090a6e10c460074ca575a
- affected a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 – < 9850791d389b342ae6e573fe8198db0b4d338352
- affected 03fb92a432ea5abe5909bca1455b7e44a9380480 – < c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d
- affected 03fb92a432ea5abe5909bca1455b7e44a9380480 – < d856f7574bcc1d81de565a857caf32f122cd7ce0
- affected 03fb92a432ea5abe5909bca1455b7e44a9380480 – < c05189a429fdb371dd455c3c466d67ac2ebff152
- affected 03fb92a432ea5abe5909bca1455b7e44a9380480 – < 08aa0537ec8cf29ceccae98acc1a534fc12598c1
- affected 03fb92a432ea5abe5909bca1455b7e44a9380480 – < c2a94de38c74e86f49124ac14f093d6a5c377a90
- affected b92e116ae36f498858dbb18e29a066c3f5348965
- affected 7f5972267295fe49f8da8eb42bc2eb3d140860c0
- affected 2d72d5ce63c92f56b9f978e8befb5838144176b9
- affected 4.9.241 – < 4.9.337
- affected 4.14.203 – < 4.14.303
- affected 4.19.154 – < 4.19.270
- affected 5.4.73 – < 5.4.229
- affected 4.4.241 – < 4.5
- affected 5.8.17 – < 5.9
- affected 5.9.2 – < 5.10
- affected 5.10
- unaffected < 5.10
- unaffected 4.9.337 – ≤ 4.9.*
- unaffected 4.14.303 – ≤ 4.14.*
- unaffected 4.19.270 – ≤ 4.19.*
- unaffected 5.4.229 – ≤ 5.4.*
- unaffected 5.10.163 – ≤ 5.10.*
- unaffected 5.15.86 – ≤ 5.15.*
- unaffected 6.0.16 – ≤ 6.0.*
- unaffected 6.1.2 – ≤ 6.1.*
- unaffected 6.2 – ≤ *
References (9)
- https://git.kernel.org/stable/c/134ae5eba41294eff76e4be20d6001b8f0192207 (opens in a new tab)
- https://git.kernel.org/stable/c/472312fef2b9eccaa03bd59e0ab2527da945e736 (opens in a new tab)
- https://git.kernel.org/stable/c/eddbb8f7620f9f8008b090a6e10c460074ca575a (opens in a new tab)
- https://git.kernel.org/stable/c/9850791d389b342ae6e573fe8198db0b4d338352 (opens in a new tab)
- https://git.kernel.org/stable/c/c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d (opens in a new tab)
- https://git.kernel.org/stable/c/d856f7574bcc1d81de565a857caf32f122cd7ce0 (opens in a new tab)
- https://git.kernel.org/stable/c/c05189a429fdb371dd455c3c466d67ac2ebff152 (opens in a new tab)
- https://git.kernel.org/stable/c/08aa0537ec8cf29ceccae98acc1a534fc12598c1 (opens in a new tab)
- https://git.kernel.org/stable/c/c2a94de38c74e86f49124ac14f093d6a5c377a90 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-50740)Record last updated .