CVE-2021-47046

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-47046
Import Source
https://storage.googleapis.com/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
2024-09-18T01:00:20Z
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"
}