CVE-2025-37889: Linux kernel · ASoC: ops: Consistently treat platform_max as control value
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 5 Nov 2026, 22:03 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
Thin evidence
One scorer or noneExploitation evidence
Disclosed: evidence found.
CVE published 9 May 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Linux Linux | Affected
| Fixed in– |
AI-suggested
A fix has been applied to the Linux kernel that reverts the problematic commit and updates the code to consistently treat platform_max as a control value. Users should update to the fixed Linux kernel versions to resolve this issue. The affected versions explicitly listed are 5.15.148, 6.1.74, and 6.6.7, so upgrading beyond these versions or to patched releases is recommended.
Description
CVE-2025-37889 addresses an inconsistency in the Linux kernel's ASoC (ALSA System on Chip) subsystem regarding the interpretation of the platform_max value. The vulnerability involved treating platform_max sometimes as a maximum register value and other times as the maximum control value, causing inconsistent behavior. The patch reverts a previous commit and updates the code to consistently treat platform_max as a control value, which aligns with the typical use case of limiting volume from the machine driver perspective. Additional comments were added to the relevant data structures to prevent future confusion.
References
- git.kernel.org/stable/c/c402f184a053c8e7ca325e50f04bbbc1e4fee019 (opens in a new tab)
- git.kernel.org/stable/c/694110bc2407a61f02a770cbb5f39b51e4ec77c6 (opens in a new tab)
- git.kernel.org/stable/c/544055329560d4b64fe204fc6be325ebc24c72ca (opens in a new tab)
- git.kernel.org/stable/c/a46a9371f8b9a0eeff53a21e11ed3b65f52d9cf6 (opens in a new tab)
- git.kernel.org/stable/c/296c8295ae34045da0214882628d49c1c060dd8a (opens in a new tab)
- git.kernel.org/stable/c/0eba2a7e858907a746ba69cd002eb9eb4dbd7bf3 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html (opens in a new tab)