firmware: arm_scmi: Unwind TX receiver mailbox setup failure
Published Sep 17, 2026
No CVSS score
EPSS 0.21%
Description
mailbox_chan_setup() can request an additional unidirectional TX receiver channel after successfully acquiring the primary channel. If that second request fails, the function returns immediately and leaves the primary channel allocated.
Unwind the primary mailbox channel before returning the error so probe deferral or other setup failures do not leave the channel busy for later probe attempts.
Affected products
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 6.4StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<6.4
- Version 6.12.110StatusunaffectedConstraints<=6.12.*
- Version 6.18.52StatusunaffectedConstraints<=6.18.*
- 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).
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 3, 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 3, 2026 | 0.21% (0.00209) | 10.04th | v5 (v2026.06.15) |
| Sep 18, 2026 | 0.17% (0.00168) | 6.50th | v5 (v2026.06.15) |
No CWE recorded.
References (4)
- https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae
- https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491
- https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413
- https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee
Change history (0)
No recorded changes yet.