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CVE-2024-36899 is a use-after-free vulnerability in the Linux kernel GPIO character-device subsystem, in the gpiolib cdev lineinfo_changed_notify notification path. During gpio_chrdev_release(), the watched_lines bitmap can be freed before lineinfo_changed_nb is unregistered. If concurrent GPIO-line release processing holds the notifier chain read lock and invokes lineinfo_changed_notify while notifier unregistration is waiting for the write lock, the notification handler can access the freed watched_lines bitmap.
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Linux kernel vulnerability covered by the security update.
Linux kernel gpiolib character-device use-after-free in lineinfo_changed_notify.
Linux kernel GPIO character-device use-after-free vulnerability in lineinfo_changed_notify.
A use-after-free vulnerability in the Linux kernel gpiolib character-device code, specifically in lineinfo_changed_notify.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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