What is CVE-2023-52996?

CVE-2023-52996 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.14 onward and patched in 5.4.231, 5.10.166, 5.15.91 and others. CVE-2023-52996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52996?

CVE-2023-52996 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-2023-52996?

Yes, CVE-2023-52996 has been patched. Fixed versions include 5.4.231, 5.10.166, 5.15.91 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52996 actively exploited?

CVE-2023-52996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-52996

Medium

In the Linux kernel, the following vulnerability has been resolved: ipv4: prevent potential spectre v1 gadget in fib_metrics_match() if (!type) continue; if (type > RTAX_MAX) return false; ... fi_val = fi->fib_metrics->metrics[type - 1]; @type being used as an array index, we need to prevent cpu speculation or risk leaking kernel memory content.

Package Linux Kernel

Published 2025-03-27

Last modified 2025-10-30

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 4.14 and later are affected. Fixed in 5.4.231, 5.10.166, 5.15.91, 6.1.9, 6.2 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 5.4.231 5.4.x ✓ 5.10.166 5.10.x ✓ 5.15.91 5.15.x ✓ 6.1.9 6.1.x ✓ 6.2

References

The following references provide additional information about CVE-2023-52996 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/5e9398a26a92fc402d82ce1f97cc67d832527da0
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7f9828fb1f688210e681268490576f0ca65c322a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8f0eb24f1a7a60ce635f0d757a46f1a37a4d467d
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2023-52996

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-03-27

Modified 2025-10-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52996?

CVE-2023-52996 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.14 onward and has been patched in 5.4.231, 5.10.166, 5.15.91 and others. CVE-2023-52996 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52996?

CVE-2023-52996 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-2023-52996?

Yes — CVE-2023-52996 has been patched. Fixed versions include 5.4.231, 5.10.166, 5.15.91 and others. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52996 actively exploited?

No — CVE-2023-52996 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.