7.8

CVE-2021-47046

drm/amd/display: Fix off by one in hdmi_14_process_transaction()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.37
Linux ≫ Linux Kernel Version >= 5.11 < 5.11.21
Linux ≫ Linux Kernel Version >= 5.12 < 5.12.4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.153
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-193 Off-by-one Error

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

https://git.kernel.org/stable/c/080bd41d6478a64edf96704fddcda52b1fd5fed7
Patch
https://git.kernel.org/stable/c/403c4528e5887af3deb9838cb77a557631d1e138
Patch
https://git.kernel.org/stable/c/6a58310d5d1e5b02d0fc9b393ba540c9367bced5
Patch
https://git.kernel.org/stable/c/8e6fafd5a22e7a2eb216f5510db7aab54cc545c1
Patch