CVE-2026-31606None▾ SunlitIn 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 refer…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 21.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
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.
Linux >= cb382536052fcc7713988869b54a81137069e5a9 < 3aa77f5da0ecb00895411f4246d8a3e4db0343c2Linux >= cb382536052fcc7713988869b54a81137069e5a9 < c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43Linux >= cb382536052fcc7713988869b54a81137069e5a9 < eb6ef6185f2054a341ec70d7e2165f5381744215Linux >= cb382536052fcc7713988869b54a81137069e5a9 < 5a229016ca3ac551294ec59770be9da94ec4bf63Linux >= cb382536052fcc7713988869b54a81137069e5a9 < 75ecc46828ec377dd5692c677168ef6d64fd7123Linux >= cb382536052fcc7713988869b54a81137069e5a9 < 81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503dLinux 3.19Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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