What is CVE-2023-53019?

CVE-2023-53019 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 4.5 onward and patched in 4.14.305, 4.19.272, 5.4.231 and others. CVE-2023-53019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53019?

CVE-2023-53019 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-2023-53019?

Yes, CVE-2023-53019 has been patched. Fixed versions include 4.14.305, 4.19.272, 5.4.231 and others. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53019 actively exploited?

CVE-2023-53019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53019

High

In the Linux kernel, the following vulnerability has been resolved: net: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

Package Linux Kernel

Published 2025-03-27

Last modified 2025-10-30

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

Weakness type

CWE-129

CVE-2023-53019 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.5 and later are affected. Fixed in 4.14.305, 4.19.272, 5.4.231, 5.10.166, 5.15.91, 6.1.9, 6.2 and their respective stable series.

Affected from

≥ 4.5

Fixed in

✓ 4.14.305 4.14.x ✓ 4.19.272 4.19.x ✓ 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-2023-53019 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/1d80c259dfbadefa61b7ea334dfce5cb57f8c72f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4bc5f1f6bc94e695dfd912122af96e7115a0ddb8
Patch
Kernel patch commit
https://git.kernel.org/stable/c/7879626296e6ffd838ae0f2af1ab49ee46354973
Patch

7 patch commits total View all on NVD

Details

CVE ID CVE-2023-53019

Severity High

CVSS score 7.8 / 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-2023-53019?

CVE-2023-53019 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.5 onward and has been patched in 4.14.305, 4.19.272, 5.4.231 and others. CVE-2023-53019 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53019?

CVE-2023-53019 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-2023-53019?

Yes — CVE-2023-53019 has been patched. Fixed versions include 4.14.305, 4.19.272, 5.4.231 and others. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53019 actively exploited?

No — CVE-2023-53019 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.