Riskcovery

CVE-2026-31606

usb: gadget: f_hid: don't call cdev_init while cdev in use

State
Published
Severity
Not scored
Published
Apr 24, 2026
Updated
Oct 30, 2026
Reserved
Mar 9, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • cb382536052fcc7713988869b54a81137069e5a9 to before 92f23ab86d9524bc51dae25ed916d0e69dce5992Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before 3aa77f5da0ecb00895411f4246d8a3e4db0343c2Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before c6c0d13db5d0f8d465eabc14bd23d2b6a7247a43Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before eb6ef6185f2054a341ec70d7e2165f5381744215Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before 5a229016ca3ac551294ec59770be9da94ec4bf63Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before 75ecc46828ec377dd5692c677168ef6d64fd7123Affected
  • cb382536052fcc7713988869b54a81137069e5a9 to before 81ebd43cc0d6d106ce7b6ccbf7b5e40ca7f5503dAffected
LinuxLinux
  • 3.19Affected
  • before 3.19Not affected
  • 6.1.191 through 6.1.*Not affected
  • 6.6.160 through 6.6.*Not affected
  • 6.12.83 through 6.12.*Not affected
  • 6.18.24 through 6.18.*Not affected
  • 6.19.14 through 6.19.*Not affected
  • 7.0.1 through 7.0.*Not affected
  • 7.1 and laterNot affected

References

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