What is CVE-2023-53684?

CVE-2023-53684 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.11 onward and patched in 5.15.106, 6.1.23, 6.2.10 and others. CVE-2023-53684 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53684?

CVE-2023-53684 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-2023-53684?

Yes, CVE-2023-53684 has been patched. Fixed versions include 5.15.106, 6.1.23, 6.2.10 and others. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53684 actively exploited?

CVE-2023-53684 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53684

Medium

In the Linux kernel, the following vulnerability has been resolved: xfrm: Zero padding when dumping algos and encap When copying data to user-space we should ensure that only valid data is copied over. Padding in structures may be filled with random (possibly sensitve) data and should never be given directly to user-space. This patch fixes the copying of xfrm algorithms and the encap template in xfrm_user so that padding is zeroed.

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

Affected versions

Linux kernel versions 5.11 and later are affected. Fixed in 5.15.106, 6.1.23, 6.2.10, 6.3 and their respective stable series.

Affected from

≥ 5.11

Fixed in

✓ 5.15.106 5.15.x ✓ 6.1.23 6.1.x ✓ 6.2.10 6.2.x ✓ 6.3

References

The following references provide additional information about CVE-2023-53684 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/0725daaa9a879388ed312110f62dbd5ea2d75f8f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1a351e26cc010d6991fbbd5701ac16581372e26f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5218af4ad5d8948faac19f71583bcd786c3852df
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2023-53684

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-2023-53684?

CVE-2023-53684 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.11 onward and has been patched in 5.15.106, 6.1.23, 6.2.10 and others. CVE-2023-53684 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53684?

CVE-2023-53684 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-2023-53684?

Yes — CVE-2023-53684 has been patched. Fixed versions include 5.15.106, 6.1.23, 6.2.10 and others. If you are running Linux kernel 5.11 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53684 actively exploited?

No — CVE-2023-53684 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.