CVE-2026-90433

In the Linux kernel, the following vulnerability has been resolved: spi: oc-tiny: switch to managed controller allocation The controller is allocated with the non-managed spi_alloc_host() while the interrupt is registered with devm_request_irq(). During removal, spi_bitbang_stop() only unregisters the controller; the subsequent spi_controller_put() then frees the controller together with its embedded driver-private devdata, which is the IRQ handler's dev_id. The devm_request_irq() release action (free_irq()), which drains the handler, does not run until after .remove() returns. A late or latched interrupt can therefore reach tiny_spi_irq() and dereference already-freed memory (e.g. hw->base). Switch to devm_spi_alloc_host() so that the devres LIFO order releases the controller only after free_irq() has drained the handler, and drop the now-redundant spi_controller_put() from .remove(). The probe error path is simplified to direct returns. This issue was found by an in-house static analysis tool.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/0260c94453a08491640e61f8cf0c384edbe7bd11
https://git.kernel.org/stable/c/1cd16c8d68f58e54abb8f331d05469237200631f
https://git.kernel.org/stable/c/d710f43ce30975d197f73c543bfe47b958d8ba17
https://git.kernel.org/stable/c/ef5cc4a8c088d05549f71950a72b5deff5000fd7

Configurations

No configuration.

History

17 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:17

Updated : 2026-09-17 17:17

NVD link : CVE-2026-90433

Mitre link : CVE-2026-90433

CVE.ORG link : CVE-2026-90433

JSON object : View

Products Affected

No product.

CWE

No CWE.

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