firmware: arm_scmi: Avoid IDR updates while cleaning channels
Published Sep 17, 2026
No CVSS score
EPSS 0.20%
Description
scmi_cleanup_channels() walks the TX/RX channel IDRs with idr_for_each() to free transport resources and destroy the dedicated transport devices before calling idr_destroy().
The destroy callback removed each entry from the same IDR being walked. That is not needed for this cleanup path, and it is unsafe because idr_for_each() has not advanced its radix-tree iterator while the callback is running. Removing the current entry from the callback can invalidate the iterator state. The callback also cannot be protected by rcu_read_lock(), because scmi_device_destroy() may sleep.
Leave IDR teardown to the following idr_destroy() call and keep the callback limited to device destruction.
Affected products
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 6.3StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.3
- Version 6.12.110StatusunaffectedConstraints<=6.12.*
- Version 6.18.52StatusunaffectedConstraints<=6.18.*
- Version 6.6.157StatusunaffectedConstraints<=6.6.*
- Version 7.2.6StatusunaffectedConstraints<=7.2.*
- Version 7.3-rc1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Sep-Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.20% (0.00200) | 8.89th | v5 (v2026.06.15) |
| Sep 18, 2026 | 0.20% (0.00200) | 10.15th | v5 (v2026.06.15) |
No CWE recorded.
References (5)
- https://git.kernel.org/stable/c/431c6b872ba7fedcc5a3afb0ec3517db4d95d088
- https://git.kernel.org/stable/c/54e5a4f7d83db4552d963d0785be32d9df680dcd
- https://git.kernel.org/stable/c/aed24a3c63920539e9de7fbfe7929a2e7c888cd2
- https://git.kernel.org/stable/c/bab26acebe55e8ad3ab545abda72faa7ca28c477
- https://git.kernel.org/stable/c/c38b1e19485aaa820e52cfe162525a8af67563da
Change history (0)
No recorded changes yet.