{"cve":"CVE-2021-47046","nvd":{"published":"2024-02-28T09:15:40.277","modified":"2026-06-17T04:16:18.060","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Fix off by one in hdmi_14_process_transaction()\n\nThe hdcp_i2c_offsets[] array did not have an entry for\nHDCP_MESSAGE_ID_WRITE_CONTENT_STREAM_TYPE so it led to an off by one\nread overflow.  I added an entry and copied the 0x0 value for the offset\nfrom similar code in drivers/gpu/drm/amd/display/modules/hdcp/hdcp_ddc.c.\n\nI also declared several of these arrays as having HDCP_MESSAGE_ID_MAX\nentries.  This doesn't change the code, but it's just a belt and\nsuspenders approach to try future proof the code.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-193"],"references":["https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7","https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138","https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5","https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1","https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2021-47046","score":0.00245,"percentile":0.15739,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}