What is CVE-2022-49766?

CVE-2022-49766 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.12 onward and patched in 6.0.10 and 6.1. CVE-2022-49766 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49766?

CVE-2022-49766 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-2022-49766?

Yes, CVE-2022-49766 has been patched. Fixed versions include 6.0.10 and 6.1. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49766 actively exploited?

CVE-2022-49766 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49766

Medium

In the Linux kernel, the following vulnerability has been resolved: netlink: Bounds-check struct nlmsgerr creation In preparation for FORTIFY_SOURCE doing bounds-check on memcpy(), switch from __nlmsg_put to nlmsg_put(), and explain the bounds check for dealing with the memcpy() across a composite flexible array struct. Avoids this future run-time warning: memcpy: detected field-spanning write (size 32) of single field "&errmsg->msg" at net/netlink/af_netlink.c:2447 (size 16)

Package Linux Kernel

Published 2025-05-01

Last modified 2025-11-06

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 2.6.12 and later are affected. Fixed in 6.0.10, 6.1 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 6.0.10 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-49766 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/710d21fdff9a98d621cd4e64167f3ef8af4e2fd1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/aff4eb16f589c3af322a2582044bca365381fcd6
Patch

Details

CVE ID CVE-2022-49766

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-05-01

Modified 2025-11-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49766?

CVE-2022-49766 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.12 onward and has been patched in 6.0.10 and 6.1. CVE-2022-49766 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49766?

CVE-2022-49766 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-2022-49766?

Yes — CVE-2022-49766 has been patched. Fixed versions include 6.0.10 and 6.1. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49766 actively exploited?

No — CVE-2022-49766 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.