CVE-2024-26747
usb: roles: fix NULL pointer issue when put module's reference
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usb: roles: fix NULL pointer issue when put module's reference
In the Linux kernel, the following vulnerability has been resolved: usb: roles: fix NULL pointer issue when put module's reference In current design, usb role class driver will get usb_role_switch parent's module reference after the user get usb_role_switch device and put the reference after the user put the usb_role_switch device. However, the parent device of usb_role_switch may be removed before the user put the usb_role_switch. If so, then, NULL pointer issue will be met when the user put the parent module's reference. This will save the module pointer in structure of usb_role_switch. Then, we don't need to find module by iterating long relations.
Reserved 2024-02-19 | Published 2024-04-03 | Updated 2024-12-19 | Assigner Linuxgit.kernel.org/...c/e279bf8e51893e1fe160b3d8126ef2dd00f661e1
git.kernel.org/...c/ef982fc41055fcebb361a92288d3225783d12913
git.kernel.org/...c/0158216805ca7e498d07de38840d2732166ae5fa
git.kernel.org/...c/4b45829440b1b208948b39cc71f77a37a2536734
git.kernel.org/...c/01f82de440f2ab07c259b7573371e1c42e5565db
git.kernel.org/...c/1c9be13846c0b2abc2480602f8ef421360e1ad9e
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