CVE-2026-93083
firmware: arm_scmi: Unwind TX receiver mailbox setup failure
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Unwind TX receiver mailbox setup failure 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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
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Affected Versions
Linux / Linux
9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < babb017cf5e4600c94c23ea87175a0380235a3ee 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 717b8e972a667fc1bebe63cbcf0d58e692cbb491 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 9958f55eace8b43713c9fc54dcf90e7cdefee413 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 < 6f7c06744d53dc8e047725d411d7f915d9ec35ae
Linux / Linux
6.4
References
git.kernel.org: https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee git.kernel.org: https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491 git.kernel.org: https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413 git.kernel.org: https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae