drm/vc4: hdmi: Avoid hang with debug registers when suspended
Priority LOW 24Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: hdmi: Avoid hang with debug registers when suspended Trying to read /sys/kernel/debug/dri/1/hdmi1_regs when the hdmi is disconnected results in a fatal system hang. This is due to the pm suspend code disabling the dvp clock. That is just a gate of the 108MHz clock in DVP_HT_RPI_MISC_CONFIG, which results in accesses hanging AXI bus. Protect against this.
Why it matters now
EPSS 0.00222 12th percentileScored 2026-11-07
Fix Fixed Linux (Linux): 5.19, 5.20, 6.1.120 +4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 5.18.18 to before 5.19; 5.19.2 to before 5.20 | 5.19, 5.20 | Patch available | CNA |
| Linux | Linux | 6.0 and later | 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13 | Patch available | CNA |
- Linux VendorLinux Affected 5.18.18 to before 5.19; 5.19.2 to before 5.20 Fixed in 5.19, 5.20 Patch available CNA
- Linux VendorLinux Affected 6.0 and later Fixed in 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.18.18 to before 5.19; 5.19.2 to before 6.1.120; 6.2 to before 6.6.64; 6.7 to before 6.11.11; 6.12 to before 6.12.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.18.18 to before 5.19; 5.19.2 to before 6.1.120; 6.2 to before 6.6.64; 6.7 to before 6.11.11; 6.12 to before 6.12.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.19, 5.20
- Fix · CNA Linux (Linux) Fixed in 6.1.120, 6.6.64, 6.11.11, 6.12.2, 6.13
Vendor assessments
Red Hat
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2024-56683
- 2026-10-03 Alias added: GHSA-5w9h-9qj2-g754
References
Patch 5
- https://git.kernel.org/stable/c/0ea29bd7d9400d3629683244d609358ed1b12075
- https://git.kernel.org/stable/c/c7d474974954d9af7e0092021223d58f2de128df
- https://git.kernel.org/stable/c/16f351adf733a182224ad24916d7673aa6df02df
- https://git.kernel.org/stable/c/74f21be9990a42dc2357bcf87a13e16c6998b90e
- https://git.kernel.org/stable/c/223ee2567a55e4f80315c768d2969e6a3b9fb23d
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Sources
- CVE-2024-56683 · CVE Program
- CVE-2024-56683 · NVD
- FIRST EPSS
- GHSA-5w9h-9qj2-g754 · GitHub Advisory Database · CC BY 4.0
- CVE-2024-56683 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences