spi: oc-tiny: switch to managed controller allocation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90433
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:48 UTC
Updated2026-09-17 17:17:48 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ce792580ea2ce6f7259b45124e9ccc4574c31606 0260c94453a08491640e61f8cf0c384edbe7bd11 git Not specified
CNA Linux Linux affected ce792580ea2ce6f7259b45124e9ccc4574c31606 ef5cc4a8c088d05549f71950a72b5deff5000fd7 git Not specified
CNA Linux Linux affected ce792580ea2ce6f7259b45124e9ccc4574c31606 1cd16c8d68f58e54abb8f331d05469237200631f git Not specified
CNA Linux Linux affected ce792580ea2ce6f7259b45124e9ccc4574c31606 d710f43ce30975d197f73c543bfe47b958d8ba17 git Not specified
CNA Linux Linux affected 2.6.39 Not specified
CNA Linux Linux unaffected 2.6.39 semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/d710f43ce30975d197f73c543bfe47b958d8ba17 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1cd16c8d68f58e54abb8f331d05469237200631f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0260c94453a08491640e61f8cf0c384edbe7bd11 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ef5cc4a8c088d05549f71950a72b5deff5000fd7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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