CVE-2026-93081
Received
Received - Intake
BaseFortify
Vulnerability report for CVE-2026-93081, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-17
Last updated on: 2026-09-17
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
firmware: arm_scmi: Fix SCMI device destroy lifetimes
scmi_child_dev_find() drops the reference returned by
device_find_child() before returning the scmi_device pointer. A
concurrent unregister can then release the device while the destroy path
is still using the returned pointer.
Make the lookup helper return the device_find_child() reference and keep
it until scmi_device_destroy() has finished unregistering the child.
Also split device_unregister() in __scmi_device_destroy() so the SCMI bus
ID is not made reusable until after device_del() has removed the old
scmi_dev.N name from sysfs. This avoids a new SCMI device reusing the
same ID while the old device is still registered.
The final device release callback is also a possible cleanup path when
SCMI children are deleted by driver core recursion rather than
__scmi_device_destroy(). Release the SCMI bus ID from a common helper
used by destroy, register-failure and final-release paths, and clear
scmi_dev->id after freeing it so the final release cannot free the same
ID again.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 9ca67840c0ddf3f39407339624cef824a4f27599 |
| Linux | Linux | 9ca67840c0ddf3f39407339624cef824a4f27599 |
| Linux | Linux | 91ff1e9652fb9beb0174267d6bb38243dff211bb |
| Linux | Linux | ff4273d47da81b95ed9396110bcbd1b7b7470fe8 |
| Linux | Linux | 2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3 |
| Linux | Linux | 969d8beaa2e374387bf9aa5602ef84fc50bb48d8 |
| Linux | Linux | 8a8a3547d5c4960da053df49c75bf623827a25da |
| Linux | Linux | 5.15.182 |
| Linux | Linux | 6.1.138 |
| Linux | Linux | 6.6.90 |
| Linux | Linux | 6.12.28 |
| Linux | Linux | 6.14.6 |
| Linux | Linux | 6.15 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
