What is CVE-2022-50740?

CVE-2022-50740 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.9.241 onward and patched in 4.9.337, 4.14.303, 4.19.270 and others. CVE-2022-50740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-50740?

CVE-2022-50740 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2022-50740?

Yes, CVE-2022-50740 has been patched. Fixed versions include 4.9.337, 4.14.303, 4.19.270 and others. If you are running Linux kernel 4.9.241 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-50740 actively exploited?

CVE-2022-50740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-50740

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.

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.9.241, 4.14.203, 4.19.154, 5.4.73, 4.4.241, 5.8.17, 5.9.2, 5.10 and later are affected. Fixed in 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2 and their respective stable series.

Affected from

≥ 4.9.241 ≥ 4.14.203 ≥ 4.19.154 ≥ 5.4.73 ≥ 4.4.241 ≥ 5.8.17 ≥ 5.9.2 ≥ 5.10

Fixed in

✓ 4.9.337 4.9.x ✓ 4.14.303 4.14.x ✓ 4.19.270 4.19.x ✓ 5.4.229 5.4.x ✓ 5.10.163 5.10.x ✓ 5.15.86 5.15.x ✓ 6.0.16 6.0.x ✓ 6.1.2 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2022-50740 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/08aa0537ec8cf29ceccae98acc1a534fc12598c1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/134ae5eba41294eff76e4be20d6001b8f0192207
Patch
Kernel patch commit
https://git.kernel.org/stable/c/472312fef2b9eccaa03bd59e0ab2527da945e736
Patch

9 patch commits total View all on NVD

Frequently asked questions

What is CVE-2022-50740?

CVE-2022-50740 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.9.241 onward and has been patched in 4.9.337, 4.14.303, 4.19.270 and others. CVE-2022-50740 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2022-50740?

Yes — CVE-2022-50740 has been patched. Fixed versions include 4.9.337, 4.14.303, 4.19.270 and others. If you are running Linux kernel 4.9.241 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-50740 actively exploited?

No — CVE-2022-50740 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.