CVE-2021-47046
See a problem?- 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
-
- 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://security-tracker.debian.org/tracker/CVE-2021-47046
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source