GHSA-48xp-r2j8-cfx4MediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_hid: don't...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (9)
- https://nvd.nist.gov/vuln/detail/CVE-2026-31606
- https://git.kernel.org/stable/c/5a229016ca3ac551294ec59770be9da94ec4bf63
- https://git.kernel.org/stable/c/75ecc46828ec377dd5692c677168ef6d64fd7123
- https://git.kernel.org/stable/c/c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43
- https://git.kernel.org/stable/c/eb6ef6185f2054a341ec70d7e2165f5381744215
- https://git.kernel.org/stable/c/81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503d
- https://git.kernel.org/stable/c/3aa77f5da0ecb00895411f4246d8a3e4db0343c2
- https://git.kernel.org/stable/c/92f23ab86d9524bc51dae25ed916d0e69dce5992
- https://github.com/advisories/GHSA-48xp-r2j8-cfx4