What is CVE-2022-49538?

CVE-2022-49538 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 3.13 onward and patched in 4.9.318, 4.14.283, 4.19.247 and others. CVE-2022-49538 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49538?

CVE-2022-49538 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-2022-49538?

Yes, CVE-2022-49538 has been patched. Fixed versions include 4.9.318, 4.14.283, 4.19.247 and others. If you are running Linux kernel 3.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49538 actively exploited?

CVE-2022-49538 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-2022-49538

Medium

In the Linux kernel, the following vulnerability has been resolved: ALSA: jack: Access input_dev under mutex It is possible when using ASoC that input_dev is unregistered while calling snd_jack_report, which causes NULL pointer dereference. In order to prevent this serialize access to input_dev using mutex lock.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-01

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-2022-49538 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 3.13 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

≥ 3.13

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-2022-49538 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/1b6a6fc5280e97559287b61eade2d4b363e836f2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/582aea6084cc59fec881204f026816d1219f2348
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5cc6f623f4818c7d7e9e966a45ebf324901ca9c5
Patch

9 patch commits total View all on NVD

Details

CVE ID CVE-2022-49538

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49538?

CVE-2022-49538 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 3.13 onward and has been patched in 4.9.318, 4.14.283, 4.19.247 and others. CVE-2022-49538 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49538?

CVE-2022-49538 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-2022-49538?

Yes — CVE-2022-49538 has been patched. Fixed versions include 4.9.318, 4.14.283, 4.19.247 and others. If you are running Linux kernel 3.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49538 actively exploited?

No — CVE-2022-49538 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (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. View CWE-476 on MITRE CWE →