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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63 Patch
- https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123 Patch
- https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d Patch
- https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43 Patch
- https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 4
- Cpes+1 CPE criteria (now 1)NVD modified 2026-10-21 13:18
- StatusPublished → ModifiedNVD modified 2026-10-21 13:18
- CVSS5.5 (v3.1, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)NVD modified 2026-10-21 13:18
- First seenunscored · linuxNVD modified 2026-10-21 12:39
Affected (CPE criteria) 1
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References 6
- https://git.kernel.org/stable/c/3aa77f5da0ecb00895411f4246d8a3e4db0343c2
- https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63 Patch
- https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123 Patch
- https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d Patch
- https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43 Patch
- https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215 Patch