What is CVE-2022-49743?

CVE-2022-49743 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.5 onward and patched in 5.10.248, 5.15.93, 6.1.11 and others. CVE-2022-49743 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49743?

CVE-2022-49743 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-2022-49743?

Yes, CVE-2022-49743 has been patched. Fixed versions include 5.10.248, 5.15.93, 6.1.11 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49743 actively exploited?

CVE-2022-49743 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49743

Medium

In the Linux kernel, the following vulnerability has been resolved: ovl: Use "buf" flexible array for memcpy() destination The "buf" flexible array needs to be the memcpy() destination to avoid false positive run-time warning from the recent FORTIFY_SOURCE hardening: memcpy: detected field-spanning write (size 93) of single field "&fh->fb" at fs/overlayfs/export.c:799 (size 21)

Package Linux Kernel

Published 2025-03-27

Last modified 2026-01-19

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 5.5 and later are affected. Fixed in 5.10.248, 5.15.93, 6.1.11, 6.2 and their respective stable series.

Affected from

≥ 5.5

Fixed in

✓ 5.10.248 5.10.x ✓ 5.15.93 5.15.x ✓ 6.1.11 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2022-49743 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/012cdef22000f3104e4fa8224ad29fde509b8caf
Patch
Kernel patch commit
https://git.kernel.org/stable/c/07a96977b2f462337a9121302de64277b8747ab1
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a77141a06367825d639ac51b04703d551163e36c
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2022-49743

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2026-01-19

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49743?

CVE-2022-49743 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.248, 5.15.93, 6.1.11 and others. CVE-2022-49743 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49743?

CVE-2022-49743 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-2022-49743?

Yes — CVE-2022-49743 has been patched. Fixed versions include 5.10.248, 5.15.93, 6.1.11 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49743 actively exploited?

No — CVE-2022-49743 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.