CVE-2021-47046 (GCVE-0-2021-47046)
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2026-05-11 13:47
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4c283fdac08abf3211533f70623c90a34f41d08d
Version: 4c283fdac08abf3211533f70623c90a34f41d08d
Version: 4c283fdac08abf3211533f70623c90a34f41d08d
Version: 4c283fdac08abf3211533f70623c90a34f41d08d
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