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CVE-2026-90215

Unknown

Last modified

CVE-2026-90215 is a vulnerability of currently unknown severity. In the Linux kernel, the following vulnerability has been resolved: mtd: ubi: Release device reference on busy detach ubi_detach_mtd_dev() obtains a device reference through ubi_get_device() before checking whether the UBI device is busy. The busy return path drops ubi->ref_count but leaves the device reference held, so the device object cannot be released after a later detach. Drop the device reference before returning -EBUSY..

Description

In the Linux kernel, the following vulnerability has been resolved: mtd: ubi: Release device reference on busy detach ubi_detach_mtd_dev() obtains a device reference through ubi_get_device() before checking whether the UBI device is busy. The busy return path drops ubi->ref_count but leaves the device reference held, so the device object cannot be released after a later detach. Drop the device reference before returning -EBUSY.

Affected Software

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

VendorProductVersions
LinuxLinux>= 7e84c961b2eb062d2f47037dcca52dcd1d3615b5, < 87812858c4c8df979cb70bcd0040b925a543df6f; >= 7e84c961b2eb062d2f47037dcca52dcd1d3615b5, < e065960366b55ab21e6c643c30dec2a41451900b; >= 7e84c961b2eb062d2f47037dcca52dcd1d3615b5, < 851c5e9a829d56cb0982965f07ef8966a6722884; >= 7e84c961b2eb062d2f47037dcca52dcd1d3615b5, < 31dd710cd84d5dd63c49f640d3a9f36c9699ca95
LinuxLinux6.9

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-90215?
In the Linux kernel, the following vulnerability has been resolved: mtd: ubi: Release device reference on busy detach ubi_detach_mtd_dev() obtains a device reference through ubi_get_device() before checking whether the UBI device is busy. The busy return path drops ubi->ref_count but leaves the device reference held, so the device object cannot be released after a later detach. Drop the device reference before returning -EBUSY.
How severe is CVE-2026-90215?
Severity scoring for CVE-2026-90215 is pending analysis.
How do I fix CVE-2026-90215?
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