CVE-2026-93136

Summary

In the Linux kernel, the following vulnerability has been resolved:

bus: mhi: ep: Fix device refcount leak in the error path of MHI device creation

mhi_ep_create_device() takes one device reference for the UL channel and another for the DL channel after allocating the transfer device. These references are normally released by mhi_ep_destroy_device() before the device itself is removed.

If dev_set_name() or device_add() fails, the error path currently drops only one reference. The remaining channel references keep the device from being released and leave the channels associated with a device that was never registered.

Route both failures through a common unwind path that drops the DL channel reference, the UL channel reference, and the initial reference from device_initialize().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 8acc3813ab5015af73eeb74c9032443162f122d1affected
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 51ddb831a36102fd0ea25f354935e49abce9f0a1affected
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 4fae8fd4adc7f4765463ddeb1a5fad23936432f6affected
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 5587e7871ce994bb079f97fe7e430d99627e5292affected
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 8f3f64faee335eb678fd7dca7b95dfe3d0b271fdaffected
LinuxLinux297c77a0f27312b9a04696018c4cbd47926ca92b < 6f12862600bb70e599a614d706a095ea5f8f9858affected
LinuxLinux5.19affected
LinuxLinux0 < 5.19unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References