CVE-2021-47046

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Source

https://nvd.nist.gov/vuln/detail/CVE-2021-47046

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47046.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-47046

Related

Published

2024-02-28T09:15:40Z

Modified

2024-09-11T02:00:05Z

Summary

[none]

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Fix off by one in hdmi14process_transaction()

The hdcpi2coffsets[] array did not have an entry for HDCPMESSAGEIDWRITECONTENTSTREAMTYPE 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 HDCPMESSAGEID_MAX entries. This doesn't change the code, but it's just a belt and suspenders approach to try future proof the code.

References

Affected packages

Debian:11 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name: linux
Purl: pkg:deb/debian/linux?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.10.38-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}