What is CVE-2023-54220?

CVE-2023-54220 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 4.14.316 onward and patched in 4.14.324, 4.19.293, 5.4.255 and others. CVE-2023-54220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54220?

CVE-2023-54220 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54220?

Yes, CVE-2023-54220 has been patched. Fixed versions include 4.14.324, 4.19.293, 5.4.255 and others. If you are running Linux kernel 4.14.316 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54220 actively exploited?

CVE-2023-54220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54220

In the Linux kernel, the following vulnerability has been resolved: serial: 8250: Fix oops for port->pm on uart_change_pm() Unloading a hardware specific 8250 driver can produce error "Unable to handle kernel paging request at virtual address" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm(). Turns out commit 04e82793f068 ("serial: 8250: Reinit port->pm on port specific driver unbind") was only a partial fix. If the hardware specific driver has initialized port->pm function, we need to clear port->pm too. Just reinitializing port->ops does not do this. Otherwise serial8250_pm() will call port->pm() instead of serial8250_do_pm().

Package Linux Kernel

Published 2025-12-30

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 4.14.316, 4.19.284, 5.4.244, 5.10.181, 5.15.113, 6.1.30, 6.3.4, 6.4 and later are affected. Fixed in 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.128, 6.1.47, 6.4.12, 6.5 and their respective stable series.

Affected from

≥ 4.14.316 ≥ 4.19.284 ≥ 5.4.244 ≥ 5.10.181 ≥ 5.15.113 ≥ 6.1.30 ≥ 6.3.4 ≥ 6.4

Fixed in

✓ 4.14.324 4.14.x ✓ 4.19.293 4.19.x ✓ 5.4.255 5.4.x ✓ 5.10.192 5.10.x ✓ 5.15.128 5.15.x ✓ 6.1.47 6.1.x ✓ 6.4.12 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-54220 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/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816
Patch

8 patch commits total View all on NVD

Frequently asked questions

What is CVE-2023-54220?

CVE-2023-54220 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.14.316 onward and has been patched in 4.14.324, 4.19.293, 5.4.255 and others. CVE-2023-54220 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54220?

Yes — CVE-2023-54220 has been patched. Fixed versions include 4.14.324, 4.19.293, 5.4.255 and others. If you are running Linux kernel 4.14.316 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54220 actively exploited?

No — CVE-2023-54220 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.