# CVE-2026-80746: clk: qcom: dispcc-eliza: Fix disp_cc_mdss_mdp_clk_src RCG stall on Eliza EVK

> A kernel driver bug causes a warning and potential stall during boot on specific Qualcomm hardware, leading to local denial of service.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Sep 2026
- **Updated:** 3 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-80746, GHSA-jg8c-7679-vr46, UBUNTU-CVE-2026-80746

## What is CVE-2026-80746?

CVE-2026-80746 is a denial of service vulnerability in Linux, published on 3 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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

clk: qcom: dispcc-eliza: Fix disp_cc_mdss_mdp_clk_src RCG stall on Eliza EVK

Eliza EVK (eliza-cqs-evk.dts) does not have display enabled, however its
Display Clock Controller is enabled and references parent clocks from
DSI PHYs, which causes clock reparenting issues during probe (init) and
warning on Eliza EVK:

  disp_cc_mdss_mdp_clk_src: rcg didn't update its configuration.
  WARNING: drivers/clk/qcom/clk-rcg2.c:136 at update_config+0xd4/0xe4, CPU#1: udevd/273
  ...
    update_config (drivers/clk/qcom/clk-rcg2.c:136 (discriminator 2)) (P)
    clk_rcg2_shared_disable (drivers/clk/qcom/clk-rcg2.c:1471)
    clk_rcg2_shared_init (drivers/clk/qcom/clk-rcg2.c:1540)
    __clk_register (drivers/clk/clk.c:3959 drivers/clk/clk.c:4368)
    devm_clk_hw_register (drivers/clk/clk.c:4448 (discriminator 1) drivers/clk/clk.c:4672 (discriminator 1))
    devm_clk_register_regmap (drivers/clk/qcom/clk-regmap.c:104)
    qcom_cc_really_probe (drivers/clk/qcom/common.c:418)
    qcom_cc_probe (drivers/clk/qcom/common.c:445)
    disp_cc_eliza_probe (dispcc-eliza.c:?) dispcc_eliza
    platform_probe (drivers/base/platform.c:1432)

## Which versions are affected by CVE-2026-80746?


## How do I fix CVE-2026-80746?

Apply the vendor's patch.

## Is CVE-2026-80746 being exploited?

There is no known exploitation of CVE-2026-80746 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-80746 and fix it if it is affected.

What it is: CVE-2026-80746 is a denial of service vulnerability in Linux, published on 3 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-80746 in the wild and no public exploit code.

Affected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-80746/ (Markdown: https://insights.sbomify.com/CVE-2026-80746/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-80746
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-80746
- OSV: https://osv.dev/vulnerability/CVE-2026-80746

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-80746/
Summaries are generated and may contain mistakes; the official description above is the record.