What is CVE-2022-49421?

CVE-2022-49421 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.17 onward and patched in 4.9.318, 4.14.283, 4.19.247 and others. CVE-2022-49421 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49421?

CVE-2022-49421 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-2022-49421?

Yes, CVE-2022-49421 has been patched. Fixed versions include 4.9.318, 4.14.283, 4.19.247 and others. If you are running Linux kernel 3.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49421 actively exploited?

CVE-2022-49421 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49421

Medium

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-09-22

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 3.17 and later are affected. Fixed in 4.9.318, 4.14.283, 4.19.247, 5.4.198, 5.10.121, 5.15.46, 5.17.14, 5.18.3, 5.19 and their respective stable series.

Affected from

≥ 3.17

Fixed in

✓ 4.9.318 4.9.x ✓ 4.14.283 4.14.x ✓ 4.19.247 4.19.x ✓ 5.4.198 5.4.x ✓ 5.10.121 5.10.x ✓ 5.15.46 5.15.x ✓ 5.17.14 5.17.x ✓ 5.18.3 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49421 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/2e2e2c71b2642289438392edbf5d08cdbc0b138b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/38d245cebf545338a6bc1c7762023de3fbecd7b7
Patch
Kernel patch commit
https://git.kernel.org/stable/c/51eb1bb6baeb478538dd4ec6459fd68c44a855b1
Patch

9 patch commits total View all on NVD

Details

CVE ID CVE-2022-49421

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-09-22

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49421?

CVE-2022-49421 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.17 onward and has been patched in 4.9.318, 4.14.283, 4.19.247 and others. CVE-2022-49421 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49421?

CVE-2022-49421 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-2022-49421?

Yes — CVE-2022-49421 has been patched. Fixed versions include 4.9.318, 4.14.283, 4.19.247 and others. If you are running Linux kernel 3.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49421 actively exploited?

No — CVE-2022-49421 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.