CVE-2025-37889: Linux kernel · ASoC: ops: Consistently treat platform_max as control value
Affects Linux kernelSource GCVE Database
Not known to be exploited · CVSS 5.5 Medium · fixed in 5.15.0-1086.93~20.04.1 : update Linux kernel when convenient.
Data as of 12 Nov 2026, 19:25 UTC
Thin evidence
One scorer or none- Patch
- Available – fixed in 5.15.0-1086.93~20.04.1, 5.15.0-1091.100~20.04.1, 5.15.0-1085.94~20.04.1 +64
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation 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 12 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
- ubuntu.com/security/notices/USN-7591-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7592-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7593-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7597-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7597-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7598-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7602-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7605-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7606-1 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 24.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-6.11pkg:deb/ubuntu/linux-azure-6.11?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-azure-nvidiapkg:deb/ubuntu/linux-azure-nvidia?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and has been released in multiple Linux kernel versions including 5.15.0-1086.93~20.04.1 and later. Users should apply the official kernel updates provided by their Linux distribution and reboot their systems to ensure the fix is applied. No additional mitigation steps are required beyond applying the official patch.
Description
CVE-2025-37889 is a vulnerability in the Linux kernel's ASoC (ALSA System on Chip) audio subsystem related to inconsistent treatment of the platform_max value. The issue involves inconsistent interpretation of platform_max either as a maximum register value or as the maximum control value. The patch reverts a previous commit and updates the code to consistently treat platform_max as a control value, which aligns with typical usage in machine drivers. This inconsistency could lead to incorrect volume control behavior. The vulnerability has been fixed in multiple Linux kernel versions.
References
- ubuntu.com/security/CVE-2025-37889 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2025-37889 (opens in a new tab)
- git.kernel.org/linus/0eba2a7e858907a746ba69cd002eb9eb4dbd7bf3 (opens in a new tab)
- git.kernel.org/stable/c/0eba2a7e858907a746ba69cd002eb9eb4dbd7bf3 (opens in a new tab)
- git.kernel.org/stable/c/296c8295ae34045da0214882628d49c1c060dd8a (opens in a new tab)
- git.kernel.org/stable/c/544055329560d4b64fe204fc6be325ebc24c72ca (opens in a new tab)
- git.kernel.org/stable/c/694110bc2407a61f02a770cbb5f39b51e4ec77c6 (opens in a new tab)
- git.kernel.org/stable/c/a46a9371f8b9a0eeff53a21e11ed3b65f52d9cf6 (opens in a new tab)
- git.kernel.org/stable/c/c402f184a053c8e7ca325e50f04bbbc1e4fee019 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-3 (opens in a new tab)
- ubuntu.com/security/notices/USN-7592-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7593-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7591-4 (opens in a new tab)
- ubuntu.com/security/notices/USN-7597-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7597-2 (opens in a new tab)
- ubuntu.com/security/notices/USN-7598-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7602-1 (opens in a new tab)
- ubuntu.com/security/notices/USN-7605-1 (opens in a new tab)