CVE - CVE-2021-47046

CVE-ID
CVE-2021-47046	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7 URL:https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7 MISC:https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138 URL:https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138 MISC:https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5 URL:https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5 MISC:https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1 URL:https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1
Assigning CNA
kernel.org
Date Record Created
20240227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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