What is CVE-2022-49362?

CVE-2022-49362 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 5.18 onward and patched in 5.18.4 and 5.19. CVE-2022-49362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49362?

CVE-2022-49362 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2022-49362?

Yes, CVE-2022-49362 has been patched. Fixed versions include 5.18.4 and 5.19. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49362 actively exploited?

CVE-2022-49362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2022-49362

High

In the Linux kernel, the following vulnerability has been resolved: NFSD: Fix potential use-after-free in nfsd_file_put() nfsd_file_put_noref() can free @nf, so don't dereference @nf immediately upon return from nfsd_file_put_noref().

Package Linux Kernel

Published 2025-02-26

Last modified 2025-03-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2022-49362 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.18 and later are affected. Fixed in 5.18.4, 5.19 and their respective stable series.

Affected from

≥ 5.18

Fixed in

✓ 5.18.4 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49362 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/261eabe19cb28e4a8587a4442d257b543d7c2d57
Patch
Kernel patch commit
https://git.kernel.org/stable/c/333dcc94ebf53f79f3dc0e7a7c16700bc7ff7e57
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ada1757b259f353cade47037ee0a0249b4cddad3
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2022-49362

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-03-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49362?

CVE-2022-49362 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 5.18 onward and has been patched in 5.18.4 and 5.19. CVE-2022-49362 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49362?

CVE-2022-49362 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2022-49362?

Yes — CVE-2022-49362 has been patched. Fixed versions include 5.18.4 and 5.19. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49362 actively exploited?

No — CVE-2022-49362 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. View CWE-416 on MITRE CWE →