CVE-2026-98093

ASoC: fsl_micfil: balance mclk enable/disable

HIGH
7.8
CVSS Score
Published: September 25, 2026 at 10:24 AM UTC
Updated: October 23, 2026 at 06:48 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.13 ≤ v < 6.18.536.19 ≤ v < 7.2.76.137.3b47024dc624bcffb89d238f4a5b490363cea2a1e
Vendor states this is fixed in 470db2026a435b79f7ecb4d65523ea16a99d55d8 (fixed)
Vendor states this is fixed in d3dbccfe6afa7b9a6a7ed65cfaa76a47fa050a56 (fixed)
Vendor states this is fixed in fa1bbe3534499dd89d3b0b941d6dd4ddb70c31b5 (fixed)
Vendor states this is fixed in 6.13 (unaffected)
Vendor states this is fixed in 6.18.53 (unaffected)
Vendor states this is fixed in 7.2.7 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)
Vendor states this is fixed in 7.3-rc3 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-404

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