CVE-2026-31606 in Linux
要約
〜によって MITRE • 2026年04月24日
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: f_hid: don't call cdev_init while cdev in use
When calling unbind, then bind again, cdev_init reinitialized the cdev, even though there may still be references to it. That's the case when the /dev/hidg* device is still opened. This obviously unsafe behavior like oopes.
This fixes this by using cdev_alloc to put the cdev on the heap. That way, we can simply allocate a new one in hidg_bind.
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