What is CVE-2023-53569?

CVE-2023-53569 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 2.6.12 onward and patched in 4.14.316, 4.19.284, 5.4.244 and others. CVE-2023-53569 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53569?

CVE-2023-53569 has a CVSS score of 7.8 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:H/A:H.

Is there a patch available for CVE-2023-53569?

Yes, CVE-2023-53569 has been patched. Fixed versions include 4.14.316, 4.19.284, 5.4.244 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53569 actively exploited?

CVE-2023-53569 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53569

High

In the Linux kernel, the following vulnerability has been resolved: ext2: Check block size validity during mount Check that log of block size stored in the superblock has sensible value. Otherwise the shift computing the block size can overflow leading to undefined behavior.

Package Linux Kernel

Published 2025-10-04

Last modified 2026-03-21

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30, 6.3.4, 6.4 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 4.14.316 4.14.x ✓ 4.19.284 4.19.x ✓ 5.4.244 5.4.x ✓ 5.10.181 5.10.x ✓ 5.15.113 5.15.x ✓ 6.1.30 6.1.x ✓ 6.3.4 6.3.x ✓ 6.4

References

The following references provide additional information about CVE-2023-53569 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/0ebfaf14150f55550cffb1148ed3920143c7a69c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/22ab5fed07ad4b206ea910fd0132d1a0d4831584
Patch
Kernel patch commit
https://git.kernel.org/stable/c/451b98155be5dfee05bc6e7c8b30c0be4add3f71
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2023-53569

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2025-10-04

Modified 2026-03-21

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53569?

CVE-2023-53569 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 2.6.12 onward and has been patched in 4.14.316, 4.19.284, 5.4.244 and others. CVE-2023-53569 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53569?

CVE-2023-53569 has a CVSS score of 7.8 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:H/A:H.
Is there a patch available for CVE-2023-53569?

Yes — CVE-2023-53569 has been patched. Fixed versions include 4.14.316, 4.19.284, 5.4.244 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53569 actively exploited?

No — CVE-2023-53569 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.