What is CVE-2021-47046?

CVE-2021-47046 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2021-47046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47046?

CVE-2021-47046 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-2021-47046?

No patch is currently available for CVE-2021-47046. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47046 actively exploited?

CVE-2021-47046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47046

High

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix off by one in hdmi_14_process_transaction() The hdcp_i2c_offsets[] array did not have an entry for HDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one read overflow. I added an entry and copied the 0x0 value for the offset from similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c. I also declared several of these arrays as having HDCP_MESSAGE_ID_MAX entries. This doesn't change the code, but it's just a belt and suspenders approach to try future proof the code.

Package Linux Kernel

Published 2024-02-28

Last modified 2024-12-09

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-193

CVE-2021-47046 is classified as CWE-193

See CWE-193 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-47046 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/080bd41d6478a64edf96704fddcda52b1fd5fed7
Patch
Kernel patch commit
https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138
Patch
Kernel patch commit
https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47046

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-02-28

Modified 2024-12-09

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47046?

CVE-2021-47046 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2021-47046 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47046?

CVE-2021-47046 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-2021-47046?

No patch is currently available for CVE-2021-47046. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47046 actively exploited?

No — CVE-2021-47046 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.