CVE-2026-80746
Received Received - Intake

Clock Stall Fix in Linux Kernel Display Clock Controller

Vulnerability report for CVE-2026-80746, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: kernel.org

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)

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Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-03
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
qualcomm dispcc_eliza *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a clock controller issue in the Display Clock Controller (dispcc) for the Eliza EVK platform. The problem occurs because the Eliza EVK does not have display enabled, but its Display Clock Controller is still active and references parent clocks from DSI PHYs. This causes clock reparenting issues during system initialization, leading to a warning message about the disp_cc_mdss_mdp_clk_src RCG failing to update its configuration.

Detection Guidance

This vulnerability is specific to the Linux kernel's Display Clock Controller for the Eliza EVK platform. Detection requires checking kernel logs for the warning message: 'disp_cc_mdss_mdp_clk_src: rcg didn't update its configuration.' Use 'dmesg | grep -i 'disp_cc_mdss_mdp_clk_src' or 'journalctl -k | grep -i 'disp_cc_mdss_mdp_clk_src' to search for this issue.

Impact Analysis

This vulnerability primarily affects systems using the Eliza EVK platform with the Linux kernel. It causes warning messages during boot but does not appear to lead to system crashes or data corruption. The impact is limited to potential log clutter and minor operational disruptions during system initialization.

Mitigation Strategies

Apply the Linux kernel patch that resolves this issue. Update to a kernel version containing the fix for the dispcc-eliza driver. If using a custom kernel, ensure the patch for 'clk: qcom: dispcc-eliza: Fix disp_cc_mdss_mdp_clk_src RCG stall' is applied.

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