UnratedFix available
i3c: master: Fix device_register() error path
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix device_register() error path When device_register() fails in i3c_master_register_new_i3c_devs(), put_device() is called to drop the reference taken by device_register(). That drops the last reference, so the device's release callback i3c_device_release() runs and frees the i3c_device. Two problems follow from that: i3c_device_release() does WARN_ON(i3cdev->desc), so it warns because desc->dev->desc still points back at the descriptor. Clear it before calling put_device(). After put_device() frees the i3c_device, desc->dev is left pointing at freed memory, so clear desc->dev as well. That prevents, for example, i3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and dereferencing it.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.270, 5.15.221, 6.1.188, 6.12.110, 6.18.52, 6.6.157, 7.2.6
- CVEs
- CVE-2026-93283
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 03:24 UTC · Revision 1
Source evidence
i3c: master: Fix device_register() error path
core-osv · Original sourcePublished 24 Sept 2026, 15:52 UTC
In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix device_register() error path When device_register() fails in i3c_master_register_new_i3c_devs(), put_device() is called to drop the reference taken by device_register(). That drops the last reference, so the device's release callback i3c_device_release() runs and frees the i3c_device. Two problems follow from that: i3c_device_release() does WARN_ON(i3cdev->desc), so it warns because desc->dev->desc still points back at the descriptor. Clear it before calling put_device(). After put_device() frees the i3c_device, desc->dev is left pointing at freed memory, so clear desc->dev as well. That prevents, for example, i3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and dereferencing it.
osv:CVE-2026-93283
Kernel
Fixed versions: 5.10.270, 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6
Complete source record
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"title": "i3c: master: Fix device_register() error path",
"summary": "In the Linux kernel, the following vulnerability has been resolved: i3c: master: Fix device_register() error path When device_register() fails in i3c_master_register_new_i3c_devs(), put_device() is called to drop the reference taken by device_register(). That drops the last reference, so the device's release callback i3c_device_release() runs and frees the i3c_device. Two problems follow from that: i3c_device_release() does WARN_ON(i3cdev->desc), so it warns because desc->dev->desc still points back at the descriptor. Clear it before calling put_device(). After put_device() frees the i3c_device, desc->dev is left pointing at freed memory, so clear desc->dev as well. That prevents, for example, i3c_master_unregister_i3c_devs() seeing desc->dev as non-NULL and dereferencing it.",
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"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93283.json"
}
}
],
"modified": "2026-10-28T02:30:25.528875727Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/20a2b6df91fd782ef2ff551febef594d0b46a9a7",
"https://git.kernel.org/stable/c/5bf498623f8397d45f85f14cd631c5e5a565c2fb",
"https://git.kernel.org/stable/c/6ecf17bf5fe8da51a6e3fc9e03a76898fcc5c6cf",
"https://git.kernel.org/stable/c/74be657d98a8d684c0475f3cbd450ef2a30ffc73",
"https://git.kernel.org/stable/c/7ef12e1dd06e442eebf370f6e53c41bd056d0f22",
"https://git.kernel.org/stable/c/7f8e2c4f3704d9774bb26b49b1ad6a60ae57d4a0",
"https://git.kernel.org/stable/c/a14dbdf471001dd0601b0c491184990c178a199c",
"https://git.kernel.org/stable/c/d22ad96f1a0c89e0ba66a2facc7430f0923919e3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93283.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-93283",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93283.json"
}
},
"related_cves": [
{
"value": "CVE-2026-93283",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 492179,
"published_at": "2026-09-24T15:52:26.252+00:00"
}