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

drm/msm/dsi: Drop dev_pm_opp_set_rate(0)

dev_pm_opp_set_rate(0) removes the vote specified in required-opps but
does not actually park the clock, making it run without the necessary
power backing. Drop the explicit call to it.

Every call site of ops->link_clk_disable() is followed by
pm_runtime_put(), so the power vote will be rescinded if deemed safe.

Patchwork: https://patchwork.freedesktop.org/patch/742783/
Published: 2026-09-17
Score: n/a
EPSS: < 1% Very Low
KEV: No
Impact: Denial of Service
Action: Immediate Patch
AI Analysis

Impact

The Linux kernel DRM MSM DSI driver called dev_pm_opp_set_rate(0), which removes a power vote but does not park the clock, allowing the device to run without proper power support. This mismatch can lead to hardware damage or kernel instability, effectively denying service to systems that rely on the DSI link. The weakness is improper resource management (CWE‑404).

Affected Systems

Linux kernel (all releases) – the vulnerability is present in the DRM MSM DSI driver across all Linux kernel builds.

Risk and Exploitability

The EPSS score is below 1% and the vulnerability is not listed in the CISA KEV catalog, indicating a low probability of exploitation. No CVSS score is provided, but the lack of known exploitation events and low EPSS suggest limited immediate risk. Exploiting this bug would require privileged or kernel‑module access, which is not trivially available to remote attackers. The bug was addressed by removing the explicit call to dev_pm_opp_set_rate(0).

Generated by OpenCVE AI on September 19, 2026 at 05:31 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Linux kernel update that includes the patch removing dev_pm_opp_set_rate(0) from the DRM MSM DSI driver.
  • If a kernel upgrade is not immediately possible, replace the DSI link disabling routine with a local patch that omits the call to dev_pm_opp_set_rate(0).
  • After applying the patch or replacement, test DSI‑enabled interfaces and monitor power‑management logs for any anomalies to confirm stability.

Generated by OpenCVE AI on September 19, 2026 at 05:31 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4817-1 linux-6.12 security update
Debian DSA Debian DSA DSA-6528-1 linux security update
History

Sat, 19 Sep 2026 06:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-404

Thu, 17 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: drm/msm/dsi: Drop dev_pm_opp_set_rate(0) dev_pm_opp_set_rate(0) removes the vote specified in required-opps but does not actually park the clock, making it run without the necessary power backing. Drop the explicit call to it. Every call site of ops->link_clk_disable() is followed by pm_runtime_put(), so the power vote will be rescinded if deemed safe. Patchwork: https://patchwork.freedesktop.org/patch/742783/
Title drm/msm/dsi: Drop dev_pm_opp_set_rate(0)
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-17T16:09:06.172Z

Reserved: 2026-09-11T19:38:34.807Z

Link: CVE-2026-90362

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-17T17:17:35.210

Modified: 2026-09-17T17:17:35.210

Link: CVE-2026-90362

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T06:30:16Z

Weaknesses
  • CWE-404

    Improper Resource Shutdown or Release