pinctrl: mediatek: use devm_gpiochip_add_data() for GPIO chip

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-92482
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:17:50 UTC
Updated2026-09-17 17:17:50 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: pinctrl: mediatek: use devm_gpiochip_add_data() for GPIO chip The gpio_chip is allocated with device-managed memory but registered with the non-managed gpiochip_add_data(). This was harmless while the drivers were built-in, but once they can be built as modules and unbound/rmmod'd, devm frees the gpio_chip's memory while it is still registered, causing a use-after-free. Register it with devm_gpiochip_add_data() so it shares the same device-managed lifecycle, which also lets the manual gpiochip_remove() error paths go away.

Risk And Classification

EPSS: 0.001890000 probability, percentile 0.088470000 (date 2026-09-18)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a6df410d420aa4ff316797d352f69e7ebae5ff98 b8fa1098ee9f627d38bdf7c0ef6c1a6058a4165b git Not specified
CNA Linux Linux affected a6df410d420aa4ff316797d352f69e7ebae5ff98 9c650317ba553d297f3fc5f0ae40ec53d86f9dab git Not specified
CNA Linux Linux affected 4.1 Not specified
CNA Linux Linux unaffected 4.1 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/b8fa1098ee9f627d38bdf7c0ef6c1a6058a4165b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9c650317ba553d297f3fc5f0ae40ec53d86f9dab 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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