CVE-2026-98093
Linux: ASoC: fsl_micfil: balance mclk enable/disable
Linux LinuxOperating systemsCVSS
NoneNot scoredExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.17%Chance of exploitation activity in the next 30 days, higher than 5% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 470db2026a435b79f7ecb4d65523ea16a99d55d8LinuxCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: fsl_micfil: balance mclk enable/disable
hw_params() enables mclk unconditionally and hw_free() disables it unconditionally, but the PCM core does not guarantee 1:1 pairing: hw_free() can run without hw_params(), and hw_params() can be called multiple times from the SETUP state. This triggers an "already disabled" WARN() in the first case and leaks an enable reference in the second, leaving the clock ungateable.
Guard both sides with the existing mclk_flag, as fsl_sai.c does with mclk_streams.
Text from CVE List
Affected versions 8
- Linuxaffected: b47024dc624bcffb89d238f4a5b490363cea2a1e before 470db2026a435b79f7ecb4d65523ea16a99d55d8CVE List
- Linuxaffected: b47024dc624bcffb89d238f4a5b490363cea2a1e before fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5CVE List
- Linuxaffected: b47024dc624bcffb89d238f4a5b490363cea2a1e before d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56CVE List
- Linuxaffected: 6.13CVE List
- Linuxunaffected: all versions before 6.13CVE List
- Linuxunaffected: 6.18.53 through 6.18.*CVE List
- Linuxunaffected: 7.2.7 through 7.2.*CVE List
- Linuxunaffected: 7.3CVE List