How severe is CVE-2024-38634?

CVE-2024-38634 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-38634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-38634?

CVE-2024-38634 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-38634?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-38634 have an EU (EUVD) identifier?

Yes. CVE-2024-38634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37497.

When was CVE-2024-38634 published?

CVE-2024-38634 was published on 2024-06-21 and last updated on 2026-06-17.

CVE-2024-38634

CVE-2024-38634 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-667.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-37497
Weakness: CWE-667
Affected product: Linux Linux Kernel
Published: 2024-06-21
Last modified: 2026-06-17

Description

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]

Frequently asked questions

What is CVE-2024-38634?: 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]
How severe is CVE-2024-38634?: CVE-2024-38634 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-38634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-38634?: CVE-2024-38634 primarily affects Linux Linux Kernel. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-38634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-38634 have an EU (EUVD) identifier?: Yes. CVE-2024-38634 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-37497.
When was CVE-2024-38634 published?: CVE-2024-38634 was published on 2024-06-21 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.30:rc8:*:*:*:*:*:*

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