cpufreq: imx6q: fix devres accumulation across driver rebind
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6, 7.3
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 7 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-90296
- 2026-10-03 Alias added: GHSA-rfcg-vqg6-9mfp
- 2026-10-06 Affected versions changed · Red Hat
- 2026-10-06 CVSS score added · Red Hat
- 2026-10-19 Fix available: Linux/[email protected] · CNA
- 2026-11-06 Affected versions changed · Red Hat
References
Other 8
- https://git.kernel.org/stable/c/493c4d5982f037f288509a1cee352b8b9705fb38
- https://git.kernel.org/stable/c/d91f07381e2b70578ff92b83d9422ac31e7b9096
- https://git.kernel.org/stable/c/38d2c3c9238b9d499e1829a3b8e80c2f73c73b5c
- https://git.kernel.org/stable/c/92e53a5274276a7b1ca815b9aacebea4fb7efe75
- https://git.kernel.org/stable/c/9e314b3ecd2594958d4f4999313641290ad28ebe
- https://git.kernel.org/stable/c/e2d2612e63e294ebcdec7c6f08a1a052b7dfdc59
- https://git.kernel.org/stable/c/0f77d1a0a25056146eea1f8619fa06ce287c91f7
- https://git.kernel.org/stable/c/22c23c72c3b21fa3ec3db5070dfc0582794e0ef9
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Sources
- CVE-2026-90296 · CVE Program
- CVE-2026-90296 · NVD
- FIRST EPSS
- GHSA-rfcg-vqg6-9mfp · GitHub Advisory Database · CC BY 4.0
- CVE-2026-90296 · Red Hat security data · CC BY 4.0
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