Linux Kernel up to 6.12.109/6.18.51/7.2.5 fsl_audmix fsl_audmix_runtime_resume resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.39+

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. The affected element is the function fsl_audmix_runtime_resume of the component fsl_audmix. Such manipulation leads to resource consumption. This vulnerability is referenced as CVE-2026-93184. The attack can only be performed from a local environment. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.12.109/6.18.51/7.2.5. Affected by this issue is the function fsl_audmix_runtime_resume of the component fsl_audmix. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ASoC: fsl_audmix: rework runtime PM handling in probe After pm_runtime_enable() the AUDMIX block is powered off and stays suspended until the first runtime resume. Register writes issued between probe() and the first resume (e.g. from DAPM or ALSA control paths) target unpowered hardware and cause a system hang. Fix this by calling pm_runtime_resume_and_get() immediately after pm_runtime_enable() to power the hardware up and enable its clocks. Release the reference afterwards with pm_runtime_put() to allow the runtime PM framework to suspend the device and switch the regmap to cache-only mode when idle. When CONFIG_PM is disabled or runtime PM is not enabled, pm_runtime_* calls are stubs that do not power up the hardware. Handle this case explicitly by calling fsl_audmix_runtime_resume() directly so the hardware is always initialised and its clocks are enabled, ensuring register accesses succeed regardless of PM configuration.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2026-93184 since 09/17/2026. The exploitation is known to be easy. Local access is required to approach this attack. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

Upgrading to version 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch b5c3f8015af442c2411722cf8c220cfbae271230/e921cc73fae68ccee932ad0a4fb11d637557db0e/22c944e440bc9b16c4ee409943d69bb8ef575c9e/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: b5c3f8015af442c2411722cf8c220cfbae271230/e921cc73fae68ccee932ad0a4fb11d637557db0e/22c944e440bc9b16c4ee409943d69bb8ef575c9e/3359ba93d01a23b2e4249e9e44ccfe48eb9c5d71

Timelineinfo

09/17/2026 CVE reserved
09/17/2026 +0 days VulDB entry created
09/18/2026 +0 days Advisory disclosed
09/18/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-93184 (🔒)
GCVE (CVE): GCVE-0-2026-93184
GCVE (VulDB): GCVE-100-407270

Entryinfo

Created: 09/18/2026 00:11
Changes: 09/18/2026 00:11 (59)
Complete: 🔍
Cache ID: 216::103

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