Description
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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= cb382536052fcc7713988869b54a81137069e5a9, < 92f23ab86d9524bc51dae25ed916d0e69dce5992; >= cb382536052fcc7713988869b54a81137069e5a9, < 3aa77f5da0ecb00895411f4246d8a3e4db0343c2; >= cb382536052fcc7713988869b54a81137069e5a9, < c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43; >= cb382536052fcc7713988869b54a81137069e5a9, < eb6ef6185f2054a341ec70d7e2165f5381744215; >= cb382536052fcc7713988869b54a81137069e5a9, < 5a229016ca3ac551294ec59770be9da94ec4bf63; >= cb382536052fcc7713988869b54a81137069e5a9, < 75ecc46828ec377dd5692c677168ef6d64fd7123; >= cb382536052fcc7713988869b54a81137069e5a9, < 81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d |
| Linux | Linux | 3.19 |
References
- https://git.kernel.org/stable/c/3aa77f5da0ecb00895411f4246d8a3e4db0343c2
- https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63Patch
- https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123Patch
- https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503dPatch
- https://git.kernel.org/stable/c/92f23ab86d9524bc51dae25ed916d0e69dce5992
- https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43Patch
- https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215Patch
Timeline
- Published
- Apr 24, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Modified