What is CVE-2022-49704?

CVE-2022-49704 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.11 onward and patched in 5.15.51, 5.18.8 and 5.19. CVE-2022-49704 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49704?

CVE-2022-49704 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-2022-49704?

Yes, CVE-2022-49704 has been patched. Fixed versions include 5.15.51, 5.18.8 and 5.19. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49704 actively exploited?

CVE-2022-49704 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49704

Medium

In the Linux kernel, the following vulnerability has been resolved: 9p: fix fid refcount leak in v9fs_vfs_get_link we check for protocol version later than required, after a fid has been obtained. Just move the version check earlier.

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

Affected versions

Linux kernel versions 5.11 and later are affected. Fixed in 5.15.51, 5.18.8, 5.19 and their respective stable series.

Affected from

≥ 5.11

Fixed in

✓ 5.15.51 5.15.x ✓ 5.18.8 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49704 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/e5690f263208c5abce7451370b7786eb25b405eb
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e7b6d622bd812013eb39c8f4cd65b7ee8ede1e02
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f0126bcaee81dabc1926012126aa74caa03a4c6e
Patch

Details

CVE ID CVE-2022-49704

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-2022-49704?

CVE-2022-49704 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.11 onward and has been patched in 5.15.51, 5.18.8 and 5.19. CVE-2022-49704 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49704?

CVE-2022-49704 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-2022-49704?

Yes — CVE-2022-49704 has been patched. Fixed versions include 5.15.51, 5.18.8 and 5.19. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49704 actively exploited?

No — CVE-2022-49704 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.