What is CVE-2023-53661?

CVE-2023-53661 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Integer Overflow flaw (CWE-190), affecting Linux kernel versions from 4.4 onward and patched in 5.15.113, 6.1.30, 6.3.4 and others. CVE-2023-53661 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53661?

CVE-2023-53661 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-2023-53661?

Yes, CVE-2023-53661 has been patched. Fixed versions include 5.15.113, 6.1.30, 6.3.4 and others. If you are running Linux kernel 4.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53661 actively exploited?

CVE-2023-53661 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Integer Overflow (CWE-190)?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/190.html

CVE-2023-53661

Medium

In the Linux kernel, the following vulnerability has been resolved: bnxt: avoid overflow in bnxt_get_nvram_directory() The value of an arithmetic expression is subject of possible overflow due to a failure to cast operands to a larger data type before performing arithmetic. Used macro for multiplication instead operator for avoiding overflow. Found by Security Code and Linux Verification Center (linuxtesting.org) with SVACE.

Package Linux Kernel

Published 2025-10-07

Last modified 2026-02-26

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-190

CVE-2023-53661 is a Integer Overflow vulnerability

What is Integer Overflow?

The product performs a calculation that can produce an integer overflow, leading to unexpected values. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.4 and later are affected. Fixed in 5.15.113, 6.1.30, 6.3.4, 6.4 and their respective stable series.

Affected from

≥ 4.4

Fixed in

✓ 5.15.113 5.15.x ✓ 6.1.30 6.1.x ✓ 6.3.4 6.3.x ✓ 6.4

References

4 total

Kernel Git
https://git.kernel.org/stable/c/17e0453a7523ad7a25bb47af941b150a6c66d7b6

Patch
Kernel Git
https://git.kernel.org/stable/c/7c6dddc239abe660598c49ec95ea0ed6399a4b2a

Patch
Kernel Git
https://git.kernel.org/stable/c/d5eaf2a6b077f32a477feb1e9e1c1f60605b460e

Patch
Kernel Git
https://git.kernel.org/stable/c/efb1a257513438d43f4335f09b2f684e8167cad2

Patch

Details

CVE ID CVE-2023-53661

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-07

Modified 2026-02-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53661?

CVE-2023-53661 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Integer Overflow flaw (CWE-190) . It affects Linux kernel versions from 4.4 onward and has been patched in 5.15.113, 6.1.30, 6.3.4 and others. CVE-2023-53661 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53661?

CVE-2023-53661 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-2023-53661?

Yes. CVE-2023-53661 has been patched. Fixed versions include 5.15.113, 6.1.30, 6.3.4 and others. If you are running Linux kernel 4.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53661 actively exploited?

No. CVE-2023-53661 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.