What is CVE-2023-52628?

CVE-2023-52628 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Out-of-bounds Write flaw (CWE-787), affecting Linux kernel versions from 4.1 onward and patched in 4.19.316, 5.4.279, 5.10.198 and others. CVE-2023-52628 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52628?

CVE-2023-52628 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2023-52628?

Yes, CVE-2023-52628 has been patched. Fixed versions include 4.19.316, 5.4.279, 5.10.198 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52628 actively exploited?

CVE-2023-52628 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Write (CWE-787)?

The product writes data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/787.html

CVE-2023-52628

High

In the Linux kernel, the following vulnerability has been resolved: netfilter: nftables: exthdr: fix 4-byte stack OOB write If priv->len is a multiple of 4, then dst[len / 4] can write past the destination array which leads to stack corruption. This construct is necessary to clean the remainder of the register in case ->len is NOT a multiple of the register size, so make it conditional just like nft_payload.c does. The bug was added in 4.1 cycle and then copied/inherited when tcp/sctp and ip option support was added. Bug reported by Zero Day Initiative project (ZDI-CAN-21950, ZDI-CAN-21951, ZDI-CAN-21961).

Package Linux Kernel

Published 2024-03-28

Last modified 2025-11-04

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness type

CWE-787

CVE-2023-52628 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.1 and later are affected. Fixed in 4.19.316, 5.4.279, 5.10.198, 5.15.132, 6.1.54, 6.5.4, 6.6 and their respective stable series.

Affected from

≥ 4.1

Fixed in

✓ 4.19.316 4.19.x ✓ 5.4.279 5.4.x ✓ 5.10.198 5.10.x ✓ 5.15.132 5.15.x ✓ 6.1.54 6.1.x ✓ 6.5.4 6.5.x ✓ 6.6

References

8 total

Kernel Git
https://git.kernel.org/stable/c/1ad7b189cc1411048434e8595ffcbe7873b71082

Patch
Kernel Git
https://git.kernel.org/stable/c/28a97c43c9e32f437ebb8d6126f9bb7f3ca9521a

Patch
Kernel Git
https://git.kernel.org/stable/c/a7d86a77c33ba1c357a7504341172cc1507f0698

Patch
Kernel Git
https://git.kernel.org/stable/c/c8f292322ff16b9a2272a67de396c09a50e09dce

Patch
Kernel Git
https://git.kernel.org/stable/c/cf39c4f77a773a547ac2bcf30ecdd303bb0c80cb

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2023-52628

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-03-28

Modified 2025-11-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52628?

CVE-2023-52628 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . It affects Linux kernel versions from 4.1 onward and has been patched in 4.19.316, 5.4.279, 5.10.198 and others. CVE-2023-52628 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52628?

CVE-2023-52628 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2023-52628?

Yes. CVE-2023-52628 has been patched. Fixed versions include 4.19.316, 5.4.279, 5.10.198 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52628 actively exploited?

No. CVE-2023-52628 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.