Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — drm/amd/display: Wake DMCUB before sending a command
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0021 12.1 —
AFFECTED
Product Versions Fixed
Linux 65138eb72e1fc687be49932b9a45325598ffa01c – —
Linux 6.7 – 6.7.3
TIMELINE
Feb 20 Reserved by Linux
Feb 29 Published (CNA: Linux)
Aug 15 ENRICHED — CVE-2023-52485 (Linux). Received CVSS 5.5 and CPE data from NVD.
Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Wake DMCUB before sending a command
[Why]
We can hang in place trying to send commands when the DMCUB isn't
powered on.
[How]
For functions that execute within a DC context or DC lock we can
wrap the direct calls to dm_execute_dmub_cmd/list with code that
exits idle power optimizations and reallows once we're done with
the command submission on success.
For DM direct submissions the DM will need to manage the enter/exit
sequencing manually.
We cannot invoke a DMCUB command directly within the DM execution
helper or we can deadlock.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 20, 2024 | Reserved | Reserved by Linux |
| February 29, 2024 | Published | Published (CNA: Linux) |
| August 15, 2026 | ENRICHED | ENRICHED — CVE-2023-52485 (Linux). Received CVSS 5.5 and CPE data from NVD. |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 65138eb72e1fc687be49932b9a45325598ffa01c | — |
| Linux | Linux | — | 6.7 | 6.7.3 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-52485 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.