CVE-2026-93083
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 17, 2026
First seenSep 17, 2026
How to fix
Update
- Linux Linuxd4cf99c7ea95accde58df34bc8636bbebb3066c2, babb017cf5e4600c94c23ea87175a0380235a3ee, 717b8e972a667fc1bebe63cbcf0d58e692cbb491, 9958f55eace8b43713c9fc54dcf90e7cdefee413, 6f7c06744d53dc8e047725d411d7f915d9ec35ae or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 ≤ v < d4cf99c7ea95accde58df34bc8636bbebb3066c2, 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 ≤ v < babb017cf5e4600c94c23ea87175a0380235a3ee, 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 ≤ v < 717b8e972a667fc1bebe63cbcf0d58e692cbb491, 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 ≤ v < 9958f55eace8b43713c9fc54dcf90e7cdefee413, 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 ≤ v < 6f7c06744d53dc8e047725d411d7f915d9ec35ae, 6.4 | d4cf99c7ea95accde58df34bc8636bbebb3066c2, babb017cf5e4600c94c23ea87175a0380235a3ee, 717b8e972a667fc1bebe63cbcf0d58e692cbb491, 9958f55eace8b43713c9fc54dcf90e7cdefee413, 6f7c06744d53dc8e047725d411d7f915d9ec35ae |
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