What is CVE-2022-49938?

CVE-2022-49938 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 4.13.5 onward and patched in 5.15.66, 5.19.8 and 6.0. CVE-2022-49938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49938?

CVE-2022-49938 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-2022-49938?

Yes, CVE-2022-49938 has been patched. Fixed versions include 5.15.66, 5.19.8 and 6.0. If you are running Linux kernel 4.13.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49938 actively exploited?

CVE-2022-49938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2022-49938

Medium

In the Linux kernel, the following vulnerability has been resolved: cifs: fix small mempool leak in SMB2_negotiate() In some cases of failure (dialect mismatches) in SMB2_negotiate(), after the request is sent, the checks would return -EIO when they should be rather setting rc = -EIO and jumping to neg_exit to free the response buffer from mempool.

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-401

CVE-2022-49938 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.13.5, 4.14 and later are affected. Fixed in 5.15.66, 5.19.8, 6.0 and their respective stable series.

Affected from

≥ 4.13.5 ≥ 4.14

Fixed in

✓ 5.15.66 5.15.x ✓ 5.19.8 5.19.x ✓ 6.0

References

The following references provide additional information about CVE-2022-49938 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/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0
Patch

Details

CVE ID CVE-2022-49938

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-2022-49938?

CVE-2022-49938 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 4.13.5 onward and has been patched in 5.15.66, 5.19.8 and 6.0. CVE-2022-49938 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49938?

CVE-2022-49938 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-2022-49938?

Yes — CVE-2022-49938 has been patched. Fixed versions include 5.15.66, 5.19.8 and 6.0. If you are running Linux kernel 4.13.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49938 actively exploited?

No — CVE-2022-49938 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →