What is CVE-2024-42121?

CVE-2024-42121 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 4.15 onward and patched in 5.10.222, 5.15.163, 6.1.98 and others. CVE-2024-42121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-42121?

CVE-2024-42121 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-2024-42121?

Yes, CVE-2024-42121 has been patched. Fixed versions include 5.10.222, 5.15.163, 6.1.98 and others. If you are running Linux kernel 4.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-42121 actively exploited?

CVE-2024-42121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-42121

High

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check index msg_id before read or write [WHAT] msg_id is used as an array index and it cannot be a negative value, and therefore cannot be equal to MOD_HDCP_MESSAGE_ID_INVALID (-1). [HOW] Check whether msg_id is valid before reading and setting. This fixes 4 OVERRUN issues reported by Coverity.

Package Linux Kernel

Published 2024-07-30

Last modified 2025-11-03

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-2024-42121 is classified as CWE-129

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

Affected versions

Linux kernel versions 4.15 and later are affected. Fixed in 5.10.222, 5.15.163, 6.1.98, 6.6.39, 6.9.9, 6.10 and their respective stable series.

Affected from

≥ 4.15

Fixed in

✓ 5.10.222 5.10.x ✓ 5.15.163 5.15.x ✓ 6.1.98 6.1.x ✓ 6.6.39 6.6.x ✓ 6.9.9 6.9.x ✓ 6.10

References

7 total

Kernel Git
https://git.kernel.org/stable/c/59d99deb330af206a4541db0c4da8f73880fba03

Patch
Kernel Git
https://git.kernel.org/stable/c/9933eca6ada0cd612e19522e7a319bcef464c0eb

Patch
Kernel Git
https://git.kernel.org/stable/c/a31ea49dc8064a557565725cf045944307476a6e

Patch
Kernel Git
https://git.kernel.org/stable/c/ae91ffbc8b8d942e3e7f188728cad557b7ed5ee4

Patch
Kernel Git
https://git.kernel.org/stable/c/b5b8837d066cc182ff69fb5629ad32ade5484567

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2024-42121

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-07-30

Modified 2025-11-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-42121?

CVE-2024-42121 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 4.15 onward and has been patched in 5.10.222, 5.15.163, 6.1.98 and others. CVE-2024-42121 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-42121?

CVE-2024-42121 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-2024-42121?

Yes. CVE-2024-42121 has been patched. Fixed versions include 5.10.222, 5.15.163, 6.1.98 and others. If you are running Linux kernel 4.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-42121 actively exploited?

No. CVE-2024-42121 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.