What is CVE-2024-38634?

CVE-2024-38634 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 2.6.30 onward and patched in 4.19.316, 5.4.278, 5.10.219 and others. CVE-2024-38634 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-38634?

CVE-2024-38634 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-2024-38634?

Yes, CVE-2024-38634 has been patched. Fixed versions include 4.19.316, 5.4.278, 5.10.219 and others. If you are running Linux kernel 2.6.30 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-38634 actively exploited?

CVE-2024-38634 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2024-38634

Medium

In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Lock port->lock when calling uart_handle_cts_change() uart_handle_cts_change() has to be called with port lock taken, Since we run it in a separate work, the lock may not be taken at the time of running. Make sure that it's taken by explicitly doing that. Without it we got a splat: WARNING: CPU: 0 PID: 10 at drivers/tty/serial/serial_core.c:3491 uart_handle_cts_change+0xa6/0xb0 ... Workqueue: max3100-0 max3100_work [max3100] RIP: 0010:uart_handle_cts_change+0xa6/0xb0 ... max3100_handlerx+0xc5/0x110 [max3100] max3100_work+0x12a/0x340 [max3100]

Package Linux Kernel

Published 2024-06-21

Last modified 2025-11-04

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

Weakness type

CWE-667

CVE-2024-38634 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.30 and later are affected. Fixed in 4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93, 6.6.33, 6.9.4, 6.10 and their respective stable series.

Affected from

≥ 2.6.30

Fixed in

✓ 4.19.316 4.19.x ✓ 5.4.278 5.4.x ✓ 5.10.219 5.10.x ✓ 5.15.161 5.15.x ✓ 6.1.93 6.1.x ✓ 6.6.33 6.6.x ✓ 6.9.4 6.9.x ✓ 6.10

References

9 total

Kernel Git
https://git.kernel.org/stable/c/44b38924135d2093e2ec1812969464845dd66dc9

Patch
Kernel Git
https://git.kernel.org/stable/c/77ab53371a2066fdf9b895246505f5ef5a4b5d47

Patch
Kernel Git
https://git.kernel.org/stable/c/78dbda51bb4241b88a52d71620f06231a341f9ba

Patch
Kernel Git
https://git.kernel.org/stable/c/8296bb9e5925b6634259c5d4daee88f0cc0884ec

Patch
Kernel Git
https://git.kernel.org/stable/c/865b30c8661924ee9145f442bf32cea549faa869

Patch

Showing 5 of 9 references View all on NVD

Details

CVE ID CVE-2024-38634

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-06-21

Modified 2025-11-04

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-38634?

CVE-2024-38634 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 2.6.30 onward and has been patched in 4.19.316, 5.4.278, 5.10.219 and others. CVE-2024-38634 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-38634?

CVE-2024-38634 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-2024-38634?

Yes. CVE-2024-38634 has been patched. Fixed versions include 4.19.316, 5.4.278, 5.10.219 and others. If you are running Linux kernel 2.6.30 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-38634 actively exploited?

No. CVE-2024-38634 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.