CVE-2021-47046
Vulnerability from cvelistv5
Published
2024-02-28 08:13
Modified
2024-12-19 07:34
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1Patch
Impacted products
Vendor Product Version
Linux Linux Version: 5.5
Show details on NVD website

To clipboard 

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