CVE-2022-50740 | THREATINT

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.

PUBLISHED Reserved 2025-12-24 | Published 2025-12-24 | Updated 2025-12-24 | Assigner Linux

Product status

Default status

unaffected

6f0706ef39fecc6bf56d67728fe0c94e26b43e9d (git) before 134ae5eba41294eff76e4be20d6001b8f0192207

affected

795d57a558d106b8a5bc2bd7aeaf707d9a099244 (git) before 472312fef2b9eccaa03bd59e0ab2527da945e736

affected

df4318440c1568b7dedc5f7d4e617d0e297a1313 (git) before eddbb8f7620f9f8008b090a6e10c460074ca575a

affected

a9990ed2d7ca9339d37c7f67d6f5cb298c3f1b34 (git) before 9850791d389b342ae6e573fe8198db0b4d338352

affected

03fb92a432ea5abe5909bca1455b7e44a9380480 (git) before c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d

affected

03fb92a432ea5abe5909bca1455b7e44a9380480 (git) before d856f7574bcc1d81de565a857caf32f122cd7ce0

affected

03fb92a432ea5abe5909bca1455b7e44a9380480 (git) before c05189a429fdb371dd455c3c466d67ac2ebff152

affected

03fb92a432ea5abe5909bca1455b7e44a9380480 (git) before 08aa0537ec8cf29ceccae98acc1a534fc12598c1

affected

03fb92a432ea5abe5909bca1455b7e44a9380480 (git) before c2a94de38c74e86f49124ac14f093d6a5c377a90

affected

b92e116ae36f498858dbb18e29a066c3f5348965 (git)

affected

7f5972267295fe49f8da8eb42bc2eb3d140860c0 (git)

affected

2d72d5ce63c92f56b9f978e8befb5838144176b9 (git)

affected

Default status

affected

5.10

affected

Any version before 5.10

unaffected

4.9.337 (semver)

unaffected

4.14.303 (semver)

unaffected

4.19.270 (semver)

unaffected

5.4.229 (semver)

unaffected

5.10.163 (semver)

unaffected

5.15.86 (semver)

unaffected

6.0.16 (semver)

unaffected

6.1.2 (semver)

unaffected

6.2 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/134ae5eba41294eff76e4be20d6001b8f0192207

git.kernel.org/...c/472312fef2b9eccaa03bd59e0ab2527da945e736

git.kernel.org/...c/eddbb8f7620f9f8008b090a6e10c460074ca575a

git.kernel.org/...c/9850791d389b342ae6e573fe8198db0b4d338352

git.kernel.org/...c/c3fb3e9a2c0c1a0fa492d90eb19bcfa92a5f884d

git.kernel.org/...c/d856f7574bcc1d81de565a857caf32f122cd7ce0

git.kernel.org/...c/c05189a429fdb371dd455c3c466d67ac2ebff152

git.kernel.org/...c/08aa0537ec8cf29ceccae98acc1a534fc12598c1

git.kernel.org/...c/c2a94de38c74e86f49124ac14f093d6a5c377a90

cve.org (CVE-2022-50740)

nvd.nist.gov (CVE-2022-50740)

Download JSON