What is CVE-2022-49731?

CVE-2022-49731 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 2.6.22 onward and patched in 4.9.320, 4.14.285, 4.19.249 and others. CVE-2022-49731 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49731?

CVE-2022-49731 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-2022-49731?

Yes, CVE-2022-49731 has been patched. Fixed versions include 4.9.320, 4.14.285, 4.19.249 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49731 actively exploited?

CVE-2022-49731 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2022-49731

Medium

In the Linux kernel, the following vulnerability has been resolved: ata: libata-core: fix NULL pointer deref in ata_host_alloc_pinfo() In an unlikely (and probably wrong?) case that the 'ppi' parameter of ata_host_alloc_pinfo() points to an array starting with a NULL pointer, there's going to be a kernel oops as the 'pi' local variable won't get reassigned from the initial value of NULL. Initialize 'pi' instead to '&ata_dummy_port_info' to fix the possible kernel oops for good... Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.

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

Weakness type

CWE-476

CVE-2022-49731 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.22 and later are affected. Fixed in 4.9.320, 4.14.285, 4.19.249, 5.4.200, 5.10.124, 5.15.49, 5.18.6, 5.19 and their respective stable series.

Affected from

≥ 2.6.22

Fixed in

✓ 4.9.320 4.9.x ✓ 4.14.285 4.14.x ✓ 4.19.249 4.19.x ✓ 5.4.200 5.4.x ✓ 5.10.124 5.10.x ✓ 5.15.49 5.15.x ✓ 5.18.6 5.18.x ✓ 5.19

References

8 total

Kernel Git
https://git.kernel.org/stable/c/07cbdb4807d369fbda73062a91b570c4dc5ec429

Patch
Kernel Git
https://git.kernel.org/stable/c/1ac5efee33f29e704226506d429b84575a5d66f8

Patch
Kernel Git
https://git.kernel.org/stable/c/253334f84c81bc6a43af489f108c0bddad989eef

Patch
Kernel Git
https://git.kernel.org/stable/c/36cd19e7d4e5571d77a2ed20c5b6ef50cf57734a

Patch
Kernel Git
https://git.kernel.org/stable/c/a810bd5af06977a847d1f202b22d7defd5c62497

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2022-49731

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-2022-49731?

CVE-2022-49731 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 2.6.22 onward and has been patched in 4.9.320, 4.14.285, 4.19.249 and others. CVE-2022-49731 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49731?

CVE-2022-49731 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-2022-49731?

Yes. CVE-2022-49731 has been patched. Fixed versions include 4.9.320, 4.14.285, 4.19.249 and others. If you are running Linux kernel 2.6.22 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49731 actively exploited?

No. CVE-2022-49731 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.