Linux Kernel up to 7.2.5 cpufreq imx6q_cpufreq_remove allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00-

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel up to 7.2.5. Affected is the function imx6q_cpufreq_remove of the component cpufreq. The manipulation leads to allocation of resources. This vulnerability is listed as CVE-2026-90296. The attack must be carried out locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.2.5 and classified as problematic. This issue affects the function imx6q_cpufreq_remove of the component cpufreq. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: cpufreq: imx6q: fix devres accumulation across driver rebind imx6_soc_volt is allocated with devm_kcalloc(cpu_dev, ...), where cpu_dev is the CPU device from get_cpu_device(0). That device is never unbound, so its devres list is never released, and imx6q_cpufreq_remove() does not free the array either. Every probe therefore adds an allocation that stays for the lifetime of the system. Allocate against the platform device instead. Its devres is released when the driver is unbound, which is exactly the lifetime the array wants: imx6q_set_target() reads it, and nothing may reach that after cpufreq_unregister_driver(). That makes the array actually go away on unbind, so also clear the file-scope pointer in remove and on the failed-probe path, rather than leave it pointing at memory devres is about to release. Tested by rebinding the driver on qemu's mcimx6ul-evk.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-90296 since 09/11/2026. The exploitation is known to be easy. Attacking locally is a requirement. Additional levels of successful authentication are necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6 or 7.3-rc1 eliminates this vulnerability. Applying the patch 493c4d5982f037f288509a1cee352b8b9705fb38/d91f07381e2b70578ff92b83d9422ac31e7b9096/38d2c3c9238b9d499e1829a3b8e80c2f73c73b5c/92e53a5274276a7b1ca815b9aacebea4fb7efe75/9e314b3ecd2594958d4f4999313641290ad28ebe/e2d2612e63e294ebcdec7c6f08a1a052b7dfdc59/0f77d1a0a25056146eea1f8619fa06ce287c91f7/22c23c72c3b21fa3ec3db5070dfc0582794e0ef9 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: 4.4
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

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 5.10.270/5.15.221/6.1.188/6.6.157/6.12.110/6.18.52/7.2.6/7.3-rc1
Patch: 493c4d5982f037f288509a1cee352b8b9705fb38/d91f07381e2b70578ff92b83d9422ac31e7b9096/38d2c3c9238b9d499e1829a3b8e80c2f73c73b5c/92e53a5274276a7b1ca815b9aacebea4fb7efe75/9e314b3ecd2594958d4f4999313641290ad28ebe/e2d2612e63e294ebcdec7c6f08a1a052b7dfdc59/0f77d1a0a25056146eea1f8619fa06ce287c91f7/22c23c72c3b21fa3ec3db5070dfc0582794e0ef9

Timelineinfo

09/11/2026 CVE reserved
09/17/2026 +6 days Advisory disclosed
09/17/2026 +0 days VulDB entry created
09/17/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-90296 (🔒)
GCVE (CVE): GCVE-0-2026-90296
GCVE (VulDB): GCVE-100-406823

Entryinfo

Created: 09/17/2026 21:23
Changes: 09/17/2026 21:23 (59)
Complete: 🔍
Cache ID: 216::103

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