CVE-2026-93136
Description
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().
How to fix
- Linux Linux8acc3813ab5015af73eeb74c9032443162f122d1, 51ddb831a36102fd0ea25f354935e49abce9f0a1, 4fae8fd4adc7f4765463ddeb1a5fad23936432f6, 5587e7871ce994bb079f97fe7e430d99627e5292, 8f3f64faee335eb678fd7dca7b95dfe3d0b271fd, 6f12862600bb70e599a614d706a095ea5f8f9858 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 8acc3813ab5015af73eeb74c9032443162f122d1, 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 51ddb831a36102fd0ea25f354935e49abce9f0a1, 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 4fae8fd4adc7f4765463ddeb1a5fad23936432f6, 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 5587e7871ce994bb079f97fe7e430d99627e5292, 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 8f3f64faee335eb678fd7dca7b95dfe3d0b271fd, 297c77a0f27312b9a04696018c4cbd47926ca92b ≤ v < 6f12862600bb70e599a614d706a095ea5f8f9858, 5.19 | 8acc3813ab5015af73eeb74c9032443162f122d1, 51ddb831a36102fd0ea25f354935e49abce9f0a1, 4fae8fd4adc7f4765463ddeb1a5fad23936432f6, 5587e7871ce994bb079f97fe7e430d99627e5292, 8f3f64faee335eb678fd7dca7b95dfe3d0b271fd, 6f12862600bb70e599a614d706a095ea5f8f9858 |
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