Vulnerability Details : CVE-2021-47046

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.
Published 2024-02-28 09:15:40
Updated 2024-12-09 19:02:52
Source Linux
View at NVD,   CVE.org

Products affected by CVE-2021-47046

Exploit prediction scoring system (EPSS) score for CVE-2021-47046

EPSS FAQ
0.04%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 5 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-47046

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.8
 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
 NIST 2024-12-09

CWE ids for CVE-2021-47046

  • A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-47046

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