CVE-2026-98904: mailbox: imx: Use devm_pm_runtime_enable()
In the Linux kernel, the following vulnerability has been resolved:
mailbox: imx: Use devmpmruntimeenable()
sashiko complained about early usage of the device while probe isn't completed. This can be mitigated by delaying the pmruntimeenable() into the removal path instead doing it early. This ensures that in an error case the device is removed (and imxmushutdown()) before pmruntimedisable() so we don't have to do this manually.
For the order to work, lets move devmmboxcontrollerregister() until after the pm-runtime part. So the reverse order will be mbox-controller removal followed by disabling pm runtime.
Use devmpmruntimeenable(), remove manual pmruntimedisable() invocations and move the pmruntime handling in probe before devmmboxcontrollerregister().
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
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ubuntu/linux-azure-fdeto a version that resolves this vulnerability.Fixed in 7.0.0-1019.19 - Upgrade
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ubuntu/linux-riscvto a version that resolves this vulnerability.Fixed in 7.0.0-42.42.1 - Configuration
Use devm_pm_runtime_enable(), remove manual pm_runtime_disable() invocations, and perform the pm-runtime handling in probe before devm_mbox_controller_register().
Linux kernel mailbox: imx pm_runtime handling = devm_pm_runtime_enable()
Event History
Frequently Asked Questions
Which systems are relevant to this issue?
The issue is in the Linux kernel i.MX mailbox driver. Systems that do not use this driver are not indicated as affected by the provided information.
How can I check whether a kernel includes the fix?
Compare the kernel source or downstream patch history against the listed stable commits: b30a047744ea4344bb6f854b0a052cf276349128, adcaa21d50c3a4c884f4d0b7a95fa3bd7a07cf84, and 1f602619e408b6e9655ee76656a2a5ab6e89c5e4. The provided data does not map these commits to kernel release versions.