What is CVE-2022-49944?

CVE-2022-49944 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 5.19 onward and patched in 5.19.8 and 6.0. CVE-2022-49944 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49944?

CVE-2022-49944 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-2022-49944?

Yes, CVE-2022-49944 has been patched. Fixed versions include 5.19.8 and 6.0. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49944 actively exploited?

CVE-2022-49944 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2022-49944

Medium

In the Linux kernel, the following vulnerability has been resolved: Revert "usb: typec: ucsi: add a common function ucsi_unregister_connectors()" The recent commit 87d0e2f41b8c ("usb: typec: ucsi: add a common function ucsi_unregister_connectors()") introduced a regression that caused NULL dereference at reading the power supply sysfs. It's a stale sysfs entry that should have been removed but remains with NULL ops. The commit changed the error handling to skip the entries after a NULL con->wq, and this leaves the power device unreleased. For addressing the regression, the straight revert is applied here. Further code improvements can be done from the scratch again.

Package Linux Kernel

Published 2025-06-18

Last modified 2025-11-14

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

Weakness type

CWE-476

CVE-2022-49944 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.19 and later are affected. Fixed in 5.19.8, 6.0 and their respective stable series.

Affected from

≥ 5.19

Fixed in

✓ 5.19.8 5.19.x ✓ 6.0

References

2 total

Kernel Git
https://git.kernel.org/stable/c/3d4044c9e6d2e3f11f1f8b5e0ee8647d3eb1afad

Patch
Kernel Git
https://git.kernel.org/stable/c/5f73aa2cf8bef4a39baa1591c3144ede4788826e

Patch

Details

CVE ID CVE-2022-49944

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-06-18

Modified 2025-11-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49944?

CVE-2022-49944 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 5.19 onward and has been patched in 5.19.8 and 6.0. CVE-2022-49944 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49944?

CVE-2022-49944 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-2022-49944?

Yes. CVE-2022-49944 has been patched. Fixed versions include 5.19.8 and 6.0. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49944 actively exploited?

No. CVE-2022-49944 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.