CVE-2026-93136
Full vulnerability record from the local CVENow database.
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().
View original CVE JSON
{
"id": "CVE-2026-93136",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-09-17T17:18:08.480",
"lastModified": "2026-10-19T10:17:03.603",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: mhi: ep: Fix device refcount leak in the error path of MHI device creation\n\nmhi_ep_create_device() takes one device reference for the UL channel and\nanother for the DL channel after allocating the transfer device. These\nreferences are normally released by mhi_ep_destroy_device() before the\ndevice itself is removed.\n\nIf dev_set_name() or device_add() fails, the error path currently drops\nonly one reference. The remaining channel references keep the device\nfrom being released and leave the channels associated with a device that\nwas never registered.\n\nRoute both failures through a common unwind path that drops the DL\nchannel reference, the UL channel reference, and the initial reference\nfrom device_initialize()."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/bus/mhi/ep/main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
"lessThan": "8acc3813ab5015af73eeb74c9032443162f122d1",
"versionType": "git",
"status": "affected"
},
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
"lessThan": "51ddb831a36102fd0ea25f354935e49abce9f0a1",
"versionType": "git",
"status": "affected"
},
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
"lessThan": "4fae8fd4adc7f4765463ddeb1a5fad23936432f6",
"versionType": "git",
"status": "affected"
},
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
"lessThan": "5587e7871ce994bb079f97fe7e430d99627e5292",
"versionType": "git",
"status": "affected"
},
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
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"versionType": "git",
"status": "affected"
},
{
"version": "297c77a0f27312b9a04696018c4cbd47926ca92b",
"lessThan": "6f12862600bb70e599a614d706a095ea5f8f9858",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/bus/mhi/ep/main.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.19",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.19",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.188",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.157",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.110",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.52",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.6",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/4fae8fd4adc7f4765463ddeb1a5fad23936432f6",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/51ddb831a36102fd0ea25f354935e49abce9f0a1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5587e7871ce994bb079f97fe7e430d99627e5292",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6f12862600bb70e599a614d706a095ea5f8f9858",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/8acc3813ab5015af73eeb74c9032443162f122d1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/8f3f64faee335eb678fd7dca7b95dfe3d0b271fd",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}