What is CVE-2023-53470?

CVE-2023-53470 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 5.4 onward and patched in 5.15.112, 6.1.29, 6.2.16 and others. CVE-2023-53470 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53470?

CVE-2023-53470 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-2023-53470?

Yes, CVE-2023-53470 has been patched. Fixed versions include 5.15.112, 6.1.29, 6.2.16 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53470 actively exploited?

CVE-2023-53470 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-2023-53470

Medium

In the Linux kernel, the following vulnerability has been resolved: ionic: catch failure from devlink_alloc Add a check for NULL on the alloc return. If devlink_alloc() fails and we try to use devlink_priv() on the NULL return, the kernel gets very unhappy and panics. With this fix, the driver load will still fail, but at least it won't panic the kernel.

Package Linux Kernel

Published 2025-10-01

Last modified 2026-01-20

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-2023-53470 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 5.4 and later are affected. Fixed in 5.15.112, 6.1.29, 6.2.16, 6.3.3, 6.4 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.15.112 5.15.x ✓ 6.1.29 6.1.x ✓ 6.2.16 6.2.x ✓ 6.3.3 6.3.x ✓ 6.4

References

5 total

Kernel Git
https://git.kernel.org/stable/c/0020c16c8af7f4bc9503a2088fb30793b6771fac

Patch
Kernel Git
https://git.kernel.org/stable/c/0d02efe7f25158c93146e3bb827bc7bb3cd5e71a

Patch
Kernel Git
https://git.kernel.org/stable/c/4a54903ff68ddb33b6463c94b4eb37fc584ef760

Patch
Kernel Git
https://git.kernel.org/stable/c/5325f50de5b1433b27dda7ccff5cb7283722a3f1

Patch
Kernel Git
https://git.kernel.org/stable/c/c177dd465f5c1e5f242cdb9258826c591c257e9a

Patch

Details

CVE ID CVE-2023-53470

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-01

Modified 2026-01-20

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53470?

CVE-2023-53470 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 5.4 onward and has been patched in 5.15.112, 6.1.29, 6.2.16 and others. CVE-2023-53470 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53470?

CVE-2023-53470 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-2023-53470?

Yes. CVE-2023-53470 has been patched. Fixed versions include 5.15.112, 6.1.29, 6.2.16 and others. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53470 actively exploited?

No. CVE-2023-53470 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.