Riskcovery

CVE-2025-68205

ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

State
Published
Severity
Not scored
Published
Dec 16, 2025
Updated
May 11, 2026
Reserved
Dec 16, 2025

Read the record on cve.org

Description

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

ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver

After restructuring and splitting the HDMI codec driver code, each HDMI codec driver contains the own build_controls and build_pcms ops. A copy-n-paste error put the wrong entries for nvhdmi-mcp driver; both build_controls and build_pcms are swapped. Unfortunately both callbacks have the very same form, and the compiler didn't complain it, either. This resulted in a NULL dereference because the PCM instance hasn't been initialized at calling the build_controls callback.

Fix it by passing the proper entries.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • ad781b550f9a8829e3dae4bd3d18c4a126a53d04 to before d2aed6fac1148528181affb781aa683d6569042bAffected
  • ad781b550f9a8829e3dae4bd3d18c4a126a53d04 to before 82420bd4e17bdaba8453fbf9e10c58c9ed0c9727Affected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.17.9 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

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