CVE-2026-93083firmware: arm_scmi: Unwind TX receiver mailbox setup failure
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 before babb017cf5e4600c94c23ea87175a0380235a3ee; from 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 before 717b8e972a667fc1bebe63cbcf0d58e692cbb491; from 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 before 9958f55eace8b43713c9fc54dcf90e7cdefee413; 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1 builds before 6f7c06744d53dc8e047725d411d7f915d9ec35ae | CNA record |
References
- https://git.kernel.org/stable/c/babb017cf5e4600c94c23ea87175a0380235a3ee
- https://git.kernel.org/stable/c/717b8e972a667fc1bebe63cbcf0d58e692cbb491
- https://git.kernel.org/stable/c/9958f55eace8b43713c9fc54dcf90e7cdefee413
- https://git.kernel.org/stable/c/6f7c06744d53dc8e047725d411d7f915d9ec35ae
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.