What is CVE-2022-49306?

CVE-2022-49306 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.7 onward and patched in 5.17.15, 5.18.4 and 5.19. CVE-2022-49306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49306?

CVE-2022-49306 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49306?

Yes, CVE-2022-49306 has been patched. Fixed versions include 5.17.15, 5.18.4 and 5.19. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49306 actively exploited?

CVE-2022-49306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49306

Medium

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: host: Stop setting the ACPI companion It is no longer needed. The sysdev pointer is now used when assigning the ACPI companions to the xHCI ports and USB devices. Assigning the ACPI companion here resulted in the fwnode->secondary pointer to be replaced also for the parent dwc3 device since the primary fwnode (the ACPI companion) was shared. That was unintentional and it created potential side effects like resource leaks.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.7 and later are affected. Fixed in 5.17.15, 5.18.4, 5.19 and their respective stable series.

Affected from

≥ 5.7

Fixed in

✓ 5.17.15 5.17.x ✓ 5.18.4 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49306 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/7fd069d65da2e20b1caec3b7bcf9dfbe28c04bb2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9c185fde906a48368bd2d2a8c17d4b6fb3d670af
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d7f35934f7ab67bfd9adabc84207e59da9c19108
Patch

Details

CVE ID CVE-2022-49306

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49306?

CVE-2022-49306 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.7 onward and has been patched in 5.17.15, 5.18.4 and 5.19. CVE-2022-49306 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49306?

CVE-2022-49306 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49306?

Yes — CVE-2022-49306 has been patched. Fixed versions include 5.17.15, 5.18.4 and 5.19. If you are running Linux kernel 5.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49306 actively exploited?

No — CVE-2022-49306 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.