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CVE-2026-93083

UnknownEPSS 0.21%

Last modified

CVE-2026-93083 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.21%

10.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1, < d4cf99c7ea95accde58df34bc8636bbebb3066c2; >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1, < babb017cf5e4600c94c23ea87175a0380235a3ee; >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1, < 717b8e972a667fc1bebe63cbcf0d58e692cbb491; >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1, < 9958f55eace8b43713c9fc54dcf90e7cdefee413; >= 9f68ff79ec2cb303f360a35eef5dd8f1f0f817e1, < 6f7c06744d53dc8e047725d411d7f915d9ec35ae
LinuxLinux6.4

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-93083?
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.
How severe is CVE-2026-93083?
Severity scoring for CVE-2026-93083 is pending analysis. The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-93083?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST