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. 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?

No patch is currently available for CVE-2024-42121. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

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

Awaiting data

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.

References

The following references provide additional information about CVE-2024-42121 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Kernel patch commit
https://git.kernel.org/stable/c/59d99deb330af206a4541db0c4da8f73880fba03
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9933eca6ada0cd612e19522e7a319bcef464c0eb
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a31ea49dc8064a557565725cf045944307476a6e
Patch

6 patch commits total 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 Awaiting data

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 . 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?

No patch is currently available for CVE-2024-42121. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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.